Electric vehicle

Last updated

Nissan LEAF (4055945788).jpg
Solar Impulse SI2 pilote Bertrand Piccard Payerne November 2014 (slightly cropped).jpg
ULF B.jpg
Newone - VinBus 15.jpg
A2B Ultramotor jeh.jpg
Tesla Semi 5 (cropped).jpg
Electric vehicles around the world (left to right, from top):
Stint [nl] child transport and operator stand Kids Aktief Stint cropped.jpg
Stint  [ nl ] child transport and operator stand

An electric vehicle (EV) [note 1] is a vehicle that uses one or more electric motors for propulsion. It can be powered by a collector system, with electricity from extravehicular sources, or it can be powered autonomously by a battery (sometimes charged by solar panels, or by converting fuel to electricity using fuel cells or a generator). [1] EVs include, but are not limited to, road and rail vehicles, surface and underwater vessels, electric aircraft and electric spacecraft. For road vehicles, together with other emerging automotive technologies such as autonomous driving, connected vehicles and shared mobility, EVs form a future mobility vision called Connected, Autonomous, Shared and Electric (CASE) Mobility. [2]

Contents

EVs first came into existence in the late 19th century, when electricity was among the preferred methods for motor vehicle propulsion, providing a level of comfort and ease of operation that could not be achieved by the gasoline cars of the time. Internal combustion engines were the dominant propulsion method for cars and trucks for about 100 years, but electric power remained commonplace in other vehicle types, such as trains and smaller vehicles of all types.

In the 21st century, EVs have seen a resurgence due to technological developments, and an increased focus on renewable energy and the potential reduction of transportation's impact on climate change, air pollution, and other environmental issues. Project Drawdown describes electric vehicles as one of the 100 best contemporary solutions for addressing climate change. [3]

Government incentives to increase adoption were first introduced in the late 2000s, including in the United States and the European Union, leading to a growing market for the vehicles in the 2010s. [4] [5] Increasing public interest and awareness and structural incentives, such as those being built into the green recovery from the COVID-19 pandemic, is expected to greatly increase the electric vehicle market. During the COVID-19 pandemic, lockdowns have reduced the amount of greenhouse gases from gasoline or diesel vehicles. [6] The International Energy Agency said in 2021 that governments should do more to meet climate goals, including policies for heavy electric vehicles. [7] [8] Electric vehicle sales may increase from 2% of global share in 2016 to 30% by 2030. [9] [10] [11] As of July 2022 global EV market size was $280 billion and it is expected to grow to $1 trillion by 2026. [12] Much of this growth is expected in markets like North America, Europe and China; [10] a 2020 literature review suggested that growth in use of electric 4-wheeled vehicles appears economically unlikely in developing economies, but that electric 2-wheeler growth is likely. [13] There are more 2 and 3 wheel EVs than any other type. [14]

History

Electric motive power started in 1827, when Hungarian priest Ányos Jedlik built the first crude but viable electric motor, which used a stator, rotor, and commutator; and the next year he used it to power a small car. [15] In 1835, professor Sibrandus Stratingh of the University of Groningen, in the Netherlands, built a small-scale electric car, and sometime between 1832 and 1839, Robert Anderson of Scotland invented the first crude electric carriage, powered by non-rechargeable primary cells. [16] American blacksmith and inventor Thomas Davenport built a toy electric locomotive, powered by a primitive electric motor, in 1835. In 1838, a Scotsman named Robert Davidson built an electric locomotive that attained a speed of four miles per hour (6 km/h). In England a patent was granted in 1840 for the use of rails as conductors of electric current, and similar American patents were issued to Lilley and Colten in 1847. [17]

The first mass-produced electric vehicles appeared in America in the early 1900s. In 1902, the Studebaker Automobile Company entered the automotive business with electric vehicles, though it also entered the gasoline vehicles market in 1904. However, with the advent of cheap assembly line cars by Ford Motor Company, the popularity of electric cars declined significantly. [18]

Due to lack of electricity grids [19] and the limitations of storage batteries at that time, electric cars did not gain much popularity; however, electric trains gained immense popularity due to their economies and achievable speeds. By the 20th century, electric rail transport became commonplace due to advances in the development of electric locomotives. Over time their general-purpose commercial use reduced to specialist roles as platform trucks, forklift trucks, ambulances, [20] tow tractors, and urban delivery vehicles, such as the iconic British milk float. For most of the 20th century, the UK was the world's largest user of electric road vehicles. [21]

Electrified trains were used for coal transport, as the motors did not use the valuable oxygen in the mines. Switzerland's lack of natural fossil resources forced the rapid electrification of their rail network. One of the earliest rechargeable batteries  the nickel-iron battery  was favored by Edison for use in electric cars.

EVs were among the earliest automobiles, and before the preeminence of light, powerful internal combustion engines (ICEs), electric automobiles held many vehicle land speed and distance records in the early 1900s. They were produced by Baker Electric, Columbia Electric, Detroit Electric, and others, and at one point in history outsold gasoline-powered vehicles. In 1900, 28 percent of the cars on the road in the US were electric. EVs were so popular that even President Woodrow Wilson and his secret service agents toured Washington, D.C., in their Milburn Electrics, which covered 60–70 miles (100–110 km) per charge. [22]

Most producers of passenger cars opted for gasoline cars in the first decade of the 20th century, but electric trucks were an established niche well into the 1920s. [23] [24] [19] A number of developments contributed to a decline in the popularity of electric cars. [25] Improved road infrastructure required a greater range than that offered by electric cars, and the discovery of large reserves of petroleum in Texas, Oklahoma, and California led to the wide availability of affordable gasoline/petrol, making internal combustion powered cars cheaper to operate over long distances. [26] Electric vehicles were not seldom marketed as a women's luxury car, which may have been a stigma among male consumers. [27] Also, internal combustion powered cars became ever-easier to operate thanks to the invention of the electric starter by Charles Kettering in 1912, [28] which eliminated the need of a hand crank for starting a gasoline engine, and the noise emitted by ICE cars became more bearable thanks to the use of the muffler, which Hiram Percy Maxim had invented in 1897. As roads were improved outside urban areas, electric vehicle range could not compete with the ICE. Finally, the initiation of mass production of gasoline-powered vehicles by Henry Ford in 1913 reduced significantly the cost of gasoline cars as compared to electric cars. [29]

In the 1930s, National City Lines, which was a partnership of General Motors, Firestone, and Standard Oil of California purchased many electric tram networks across the country to dismantle them and replace them with GM buses. The partnership was convicted of conspiring to monopolize the sale of equipment and supplies to their subsidiary companies, but were acquitted of conspiring to monopolize the provision of transportation services.

Experimentation

In January 1990, General Motors' President introduced its EV concept two-seater, the "Impact", at the Los Angeles Auto Show. That September, the California Air Resources Board mandated major-automaker sales of EVs, in phases starting in 1998. From 1996 to 1998 GM produced 1117 EV1s, 800 of which were made available through three-year leases. [30]

Chrysler, Ford, GM, Honda, and Toyota also produced limited numbers of EVs for California drivers during this time period. In 2003, upon the expiration of GM's EV1 leases, GM discontinued them. The discontinuation has variously been attributed to:

A movie made on the subject in 2005–2006 was titled Who Killed the Electric Car? and released theatrically by Sony Pictures Classics in 2006. The film explores the roles of automobile manufacturers, oil industry, the U.S. government, batteries, hydrogen vehicles, and the general public, and each of their roles in limiting the deployment and adoption of this technology.

Ford released a number of their Ford Ecostar delivery vans into the market. Honda, Nissan and Toyota also repossessed and crushed most of their EVs, which, like the GM EV1s, had been available only by closed-end lease. After public protests, Toyota sold 200 of its RAV4 EVs; they later sold at over their original forty-thousand-dollar price. Later, BMW of Canada sold off a number of Mini EVs when their Canadian testing ended.

The production of the Citroën Berlingo Electrique stopped in September 2005. Zenn started production in 2006 but ended by 2009. [31]

Reintroduction

During the late 20th and early 21st century, the environmental impact of the petroleum-based transportation infrastructure, along with the fear of peak oil, led to renewed interest in an electric transportation infrastructure. [32] EVs differ from fossil fuel-powered vehicles in that the electricity they consume can be generated from a wide range of sources, including fossil fuels, nuclear power, and renewables such solar power and wind power or any combination of those. The carbon footprint and other emissions of electric vehicles varies depending on the fuel and technology used for electricity generation. [33] [34] The electricity may be stored in the vehicle using a battery, flywheel, or supercapacitors. Vehicles using internal combustion engines usually only derive their energy from a single or a few sources, usually non-renewable fossil fuels. A key advantage of electric vehicles is regenerative braking, which recovers kinetic energy, typically lost during friction braking as heat, as electricity restored to the on-board battery.

Electricity sources

There are many ways to generate electricity, of varying costs, efficiency and ecological desirability.

2402 'County of Hampshire' at Wool.JPG
A passenger train, taking power through a third rail with return through the traction rails
SwissMGB.jpg
An electric locomotive at Brig, Switzerland
MZKT open day 2019 p06.jpg
The MAZ-7907 uses an on-board generator to power in-wheel electric motors.

Connection to generator plants

Onboard generators and hybrid EVs

It is also possible to have hybrid EVs that derive electricity from multiple sources, such as:

For especially large EVs, such as submarines, the chemical energy of the diesel–electric can be replaced by a nuclear reactor. The nuclear reactor usually provides heat, which drives a steam turbine, which drives a generator, which is then fed to the propulsion. See Nuclear marine propulsion.

A few experimental vehicles, such as some cars and a handful of aircraft use solar panels for electricity.

Onboard storage

Fuel use in vehicle designs
Vehicle typeFuel used
All-petroleum vehicle
(aka all-combustion vehicle)
Most use of petroleum or other fuel.
Regular hybrid
electric vehicle
Less use of petroleum or other fuel,
but unable to be plugged in.
Plug-in hybrid vehicle Less use of petroleum or other fuel,
residual use of electricity.
All-electric vehicle
(BEV, AEV)
Exclusively uses electricity.

These systems are powered from an external generator plant (nearly always when stationary), and then disconnected before motion occurs, and the electricity is stored in the vehicle until needed.

Batteries, electric double-layer capacitors and flywheel energy storage are forms of rechargeable on-board electricity storage systems. By avoiding an intermediate mechanical step, the energy conversion efficiency can be improved compared to hybrids by avoiding unnecessary energy conversions. Furthermore, electro-chemical batteries conversions are reversible, allowing electrical energy to be stored in chemical form. [37]

Lithium-ion battery

Battery electric bus powered with lithium-ion batteries ASEAG 999 Seite.jpg
Battery electric bus powered with lithium-ion batteries
Electric truck e-Force One Iveco Stralis AD 190 E-truck. Lidl. Spielvogel.jpg
Electric truck e-Force One
Learning curve of lithium-ion batteries: the price of batteries declined by 97% in three decades. Battery-cost-learning-curve.png
Learning curve of lithium-ion batteries: the price of batteries declined by 97% in three decades.

Most electric vehicles use lithium-ion batteries (Li-Ions or LIBs). Lithium ion batteries have higher energy density, longer life span and higher power density than most other practical batteries. Complicating factors include safety, durability, thermal breakdown, its environmental impact and cost. Li-ion batteries should be used within safe temperature and voltage ranges in order to operate safely and efficiently. [40]

Increasing the battery's lifespan decreases effective costs. One technique is to operate a subset of the battery cells at a time and switching these subsets. [41]

In the past, nickel–metal hydride batteries were used in some electric cars, such as those made by General Motors. [42] These battery types are considered outdated due to their tendencies to self-discharge in the heat. [43] Furthermore, a patent for this type of battery was held by Chevron, which created a problem for their widespread development. [44] These factors, coupled with their high cost, has led to lithium-ion batteries leading as the predominant battery for EVs. [45]

The prices of lithium-ion batteries are constantly decreasing, contributing to a reduction in price for electric vehicles. [46]

Electric motor

The power of a vehicle's electric motor, as in other machines, is measured in kilowatts (kW). Electric motors can deliver their maximum torque over a wide RPM range. This means that the performance of a vehicle with a 100 kW electric motor exceeds that of a vehicle with a 100 kW internal combustion engine, which can only deliver its maximum torque within a limited range of engine speed.

Efficiency of charging varies considerably depending on the type of charger, [47] and energy is lost during the process of converting the electrical energy to mechanical energy.

Usually, direct current (DC) electricity is fed into a DC/AC inverter where it is converted to alternating current (AC) electricity and this AC electricity is connected to a 3-phase AC motor.

For electric trains, forklift trucks, and some electric cars, DC motors are often used. In some cases, universal motors are used, and then AC or DC may be employed. In recent production vehicles, various motor types have been implemented; for instance, induction motors within Tesla Motor vehicles and permanent magnet machines in the Nissan Leaf and Chevrolet Bolt. [48]

Vehicle types

It is generally possible to equip any kind of vehicle with an electric power-train.

Ground vehicles

Pure-electric vehicles

A pure-electric vehicle or all-electric vehicle is powered exclusively through electric motors. The electricity may come from a battery (battery electric vehicle), solar panel (solar vehicle) or fuel cell (fuel cell vehicle).

Hybrid EVs

A hybrid electric vehicle (HEV) is a type of hybrid vehicle that combines a conventional internal combustion engine (ICE) system with an electric propulsion system (hybrid vehicle drivetrain). The presence of the electric powertrain is intended to achieve either better fuel economy than a conventional vehicle or better performance. There is a variety of HEV types and the degree to which each function as an electric vehicle (EV) also varies. The most common form of HEV is the hybrid electric car, although hybrid electric trucks (pickups and tractors), buses, boats and aircraft also exist.

Modern HEVs make use of efficiency-improving technologies such as regenerative brakes which convert the vehicle's kinetic energy to electric energy, which is stored in a battery or supercapacitor. Some varieties of HEV use an internal combustion engine to turn an electrical generator, which either recharges the vehicle's batteries or directly powers its electric drive motors; this combination is known as a motor–generator. [49] Many HEVs reduce idle emissions by shutting down the engine at idle and restarting it when needed; this is known as a start-stop system. A hybrid-electric produces lower tailpipe emissions than a comparably sized gasoline car since the hybrid's gasoline engine is usually smaller than that of a gasoline-powered vehicle. If the engine is not used to drive the car directly, it can be geared to run at maximum efficiency, further improving fuel economy.

There are different ways that a hybrid electric vehicle can combine the power from an electric motor and the internal combustion engine. The most common type is a parallel hybrid that connects the engine and the electric motor to the wheels through mechanical coupling. In this scenario, the electric motor and the engine can drive the wheels directly. Series hybrids only use the electric motor to drive the wheels and can often be referred to as extended-range electric vehicles (EREVs) or range-extended electric vehicles (REEVs). There are also series-parallel hybrids where the vehicle can be powered by the engine working alone, the electric motor on its own, or by both working together; this is designed so that the engine can run at its optimum range as often as possible. [50]

Plug-in electric vehicle

A plug-in electric vehicle (PEV) is any motor vehicle that can be recharged from any external source of electricity, such as wall sockets, and the electricity stored in the Rechargeable battery packs drives or contributes to drive the wheels. PEV is a subcategory of electric vehicles that includes battery electric vehicles (BEVs), plug-in hybrid vehicles, (PHEVs), and electric vehicle conversions of hybrid electric vehicles and conventional internal combustion engine vehicles. [51] [52] [53]

Range-extended electric vehicle

A range-extended electric vehicle (REEV) is a vehicle powered by an electric motor and a plug-in battery. An auxiliary combustion engine is used only to supplement battery charging and not as the primary source of power. [54]

On- and off-road EVs

An electric powertrain used by Power Vehicle Innovation for trucks or buses Electric powertrain.jpg
An electric powertrain used by Power Vehicle Innovation for trucks or buses

On-road electric vehicles include electric cars, electric trolleybuses, electric buses, battery electric buses, electric trucks, electric bicycles, electric motorcycles and scooters, personal transporters, neighborhood electric vehicles, golf carts, milk floats, and forklifts. Off-road vehicles include electrified all-terrain vehicles and tractors.

Railborne EVs

A streetcar (or tram) in Hanover drawing current from a single overhead wire through a pantograph 2001-03-31.H-TW2000-Vahrenwalder-Platz.jpg
A streetcar (or tram) in Hanover drawing current from a single overhead wire through a pantograph

The fixed nature of a rail line makes it relatively easy to power EVs through permanent overhead lines or electrified third rails, eliminating the need for heavy onboard batteries. Electric locomotives, electric multiple units, electric trams (also called streetcars or trolleys), electric light rail systems, and electric rapid transit are all in common use today, especially in Europe and Asia.

Since electric trains do not need to carry a heavy internal combustion engine or large batteries, they can have very good power-to-weight ratios. This allows high speed trains such as France's double-deck TGVs to operate at speeds of 320 km/h (200 mph) or higher, and electric locomotives to have a much higher power output than diesel locomotives. In addition, they have higher short-term surge power for fast acceleration, and using regenerative brakes can put braking power back into the electrical grid rather than wasting it.

Maglev trains are also nearly always EVs. [56]

There are also battery electric passenger trains operating on non-electrified rail lines.

Space rover vehicles

Manned and unmanned vehicles have been used to explore the Moon and other planets in the Solar System. On the last three missions of the Apollo program in 1971 and 1972, astronauts drove silver-oxide battery-powered Lunar Roving Vehicles distances up to 35.7 kilometers (22.2 mi) on the lunar surface. [57] Unmanned, solar-powered rovers have explored the Moon and Mars. [58] [59]

Airborne EVs

Mars helicopter Ingenuity Mars helicopter on sol 46.png
Mars helicopter Ingenuity

Since the beginnings of aviation, electric power for aircraft has received a great deal of experimentation. Currently, flying electric aircraft include manned and unmanned aerial vehicles.

Seaborne EVs

Oceanvolt SD8.6 electric saildrive motor Oceanvolt sd8.6 electric saildrive motor.jpg
Oceanvolt SD8.6 electric saildrive motor

Electric boats were popular around the turn of the 20th century. Interest in quiet and potentially renewable marine transportation has steadily increased since the late 20th century, as solar cells have given motorboats the infinite range of sailboats. Electric motors can and have also been used in sailboats instead of traditional diesel engines. [60] Electric ferries operate routinely. [61] Submarines use batteries (charged by diesel or gasoline engines at the surface), nuclear power, fuel cells [62] or Stirling engines to run electric motor-driven propellers.

Electrically powered spacecraft

Electric power has a long history of use in spacecraft. [63] [64] The power sources used for spacecraft are batteries, solar panels and nuclear power. Current methods of propelling a spacecraft with electricity include the arcjet rocket, the electrostatic ion thruster, the Hall-effect thruster, and Field Emission Electric Propulsion.

Energy and motors

A trolleybus uses two overhead wires to provide electric current supply and return to the power source. Tradbuss Landskrona.JPG
A trolleybus uses two overhead wires to provide electric current supply and return to the power source.
Hess Swisstrolley 3 in St. Gallen Hess Swisstrolley 3 von st.gallerbus - 2017.jpg
Hess Swisstrolley 3 in St. Gallen

Most large electric transport systems are powered by stationary sources of electricity that are directly connected to the vehicles through wires. Electric traction allows the use of regenerative braking, in which the motors are used as brakes and become generators that transform the motion of, usually, a train into electrical power that is then fed back into the lines. This system is particularly advantageous in mountainous operations, as descending vehicles can produce a large portion of the power required for those ascending. This regenerative system is only viable if the system is large enough to utilise the power generated by descending vehicles.

In the systems above, motion is provided by a rotary electric motor. However, it is possible to "unroll" the motor to drive directly against a special matched track. These linear motors are used in maglev trains which float above the rails supported by magnetic levitation. This allows for almost no rolling resistance of the vehicle and no mechanical wear and tear of the train or track. In addition to the high-performance control systems needed, switching and curving of the tracks becomes difficult with linear motors, which to date has restricted their operations to high-speed point to point services.

Records

Properties

Components

The type of battery, the type of traction motor and the motor controller design vary according to the size, power and proposed application, which can be as small as a motorized shopping cart or wheelchair, through pedelecs, electric motorcycles and scooters, neighborhood electric vehicles, industrial fork-lift trucks and including many hybrid vehicles.

Energy sources

EVs are much more efficient than fossil fuel vehicles and have few direct emissions. At the same time, they do rely on electrical energy that is generally provided by a combination of non-fossil fuel plants and fossil fuel plants. Consequently, EVs can be made less polluting overall by modifying the source of electricity. In some areas, persons can ask utilities to provide their electricity from renewable energy.

Fossil fuel vehicle efficiency and pollution standards take years to filter through a nation's fleet of vehicles. New efficiency and pollution standards rely on the purchase of new vehicles, often as the current vehicles already on the road reach their end-of-life. Only a few nations set a retirement age for old vehicles, such as Japan or Singapore, forcing periodic upgrading of all vehicles already on the road.

Batteries

lithium ion polymer battery prototypes. Newer Li-poly cells provide up to 130 Wh/kg and last through thousands of charging cycles. NASA Lithium Ion Polymer Battery.jpg
lithium ion polymer battery prototypes. Newer Li-poly cells provide up to 130 Wh/kg and last through thousands of charging cycles.

An electric-vehicle battery (EVB) in addition to the traction battery speciality systems used for industrial (or recreational) vehicles, are batteries used to power the propulsion system of a battery electric vehicle (BEVs). These batteries are usually a secondary (rechargeable) battery, and are typically lithium-ion batteries. Traction batteries, specifically designed with a high ampere-hour capacity, are used in forklifts, electric golf carts, riding floor scrubbers, electric motorcycles, electric cars, trucks, vans, and other electric vehicles. [70] [71]

Efficiency

EVs convert over 59–62% of grid energy to the wheels. Conventional gasoline vehicles convert around 17–21%. [72]

Charging

Grid capacity

If almost all road vehicles were electric it would increase global demand for electricity by up to 25% by 2050 compared to 2020. [73] However, overall energy consumption and emissions would diminish because of the higher efficiency of EVs over the entire cycle, and the reduction in energy needed to refine fossil fuels.

Charging stations

Tesla Roadster at recharge station.jpg
Brammo Empulse at charging station, August 2012.jpg
Nissan LEAF got thirsty.jpg
Charging stations in SF City Hall 02 2009 02.jpg
Charging stations for electric vehicles:

A charging station, also known as a charge point or electric vehicle supply equipment (EVSE), is a piece of equipment that supplies electrical power for charging plug-in electric vehicles (including electric cars, electric trucks, electric buses, neighborhood electric vehicles, and plug-in hybrids).

There are two main types: AC charging stations and DC charging stations. Batteries can only be charged with direct current (DC) electric power, while most electricity is delivered from the power grid as alternating current (AC). For this reason, most electric vehicles have a built-in AC-to-DC converter, commonly known as the "onboard charger". At an AC charging station, AC power from the grid is supplied to this onboard charger, which produces DC power to charge the battery. DC chargers facilitate higher power charging (which requires much larger AC-to-DC converters) by building the converter into the charging station instead of the vehicle to avoid size and weight restrictions. The station then supplies DC power to the vehicle directly, bypassing the onboard converter. Most fully electric car models can accept both AC and DC power.

Charging stations provide connectors that conform to a variety of international standards. DC charging stations are commonly equipped with multiple connectors to be able to charge a wide variety of vehicles that utilize competing standards.

Public charging stations are typically found street-side or at retail shopping centers, government facilities, and other parking areas. Private charging stations are typically found at residences, workplaces, and hotels.

Battery swapping

Instead of recharging EVs from electric sockets, batteries could be mechanically replaced at special stations in a few minutes (battery swapping).

Batteries with greater energy density such as metal-air fuel cells cannot always be recharged in a purely electric way, so some form of mechanical recharge may be used instead. A zinc–air_battery, technically a fuel cell, is difficult to recharge electrically so may be "refueled" by periodically replacing the anode or electrolyte instead. [74]

Dynamic charging

Dynamic charging technologies tested in Sweden [75] [76] [77]
Type
(and developer)
Power per
receiver
(and power
pending further
development)
Million SEK
per km road
both ways
References
Overhead power650 kW
(1000 kW)
12.4 [75] :140–144
[76] :23–24,54
Ground-level power supply
through in-road rail
(Elways and NCC consortium)
200 kW
(800 kW)
9.4-10.5 [75] :146–149
[76] :21–23,54
Ground-level power supply
through on-road rail
(Elonroad and ABB consortium)
150 kW
(500 kW)
11.5-15.3 [76] :25–26,54
Wireless power transfer
through in-road
25 kW
(40 kW)
19.5-20.8 [75] :171–172
[76] :26–28,54

TRL (formerly Transport Research Laboratory) lists three power delivery types for dynamic charging, or charging while the vehicle is in motion: overhead power lines, and ground level power through rail or induction. TRL lists overhead power as the most technologically mature solution which provides the highest levels of power, but the technology is unsuitable for non-commercial vehicles. Ground-level power is suitable for all vehicles, with rail being a mature solution with high transfer of power and easily accessible and inspected elements. Inductive charging delivers the least power and requires more roadside equipment than the alternatives. [75] :Appendix D

Alstom and other companies have, in 2020, begun drafting a standard for ground-level power supply electric roads. [78] [79] The European Commission published in 2021 a request for regulation and standardization of electric road systems. [80] Shortly afterward, a working group of the French Ministry of Ecology recommended adopting a European electric road standard formulated with Sweden, Germany, Italy, the Netherlands, Spain, Poland, and others. [81] The standard, CENELEC Technical Standard 50717, is scheduled to be approved and published by November 14, 2022. [82]

Other in-development technologies

Conventional electric double-layer capacitors are being worked on to achieve the energy density of lithium-ion batteries, offering almost unlimited lifespans and no environmental issues. High-K electric double-layer capacitors, such as EEStor's EESU, could improve lithium ion energy density several times over if they can be produced. Lithium-sulphur batteries offer 250 Wh/kg. [83] Sodium-ion batteries promise 400 Wh/kg with only minimal expansion/contraction during charge/discharge and a very high surface area. [84]

Safety

The United Nations in Geneva (UNECE) has adopted the first international regulation (Regulation 100) on safety of both fully electric and hybrid electric cars, with the intent of ensuring that cars with a high voltage electric power train, such as hybrid and fully-electric vehicles, are as safe as combustion-powered cars. The EU and Japan have already indicated that they intend to incorporate the new UNECE Regulation in their respective rules on technical standards for vehicles. [85]

Environmental

EVs release no tailpipe air pollutants; however, EVs are charged with electricity that may be generated by means that have health and environmental impacts. [86] [87]

The carbon emissions from producing and operating an EV are typically less than those of producing and operating a conventional vehicle. [88] EVs in urban areas almost always pollute less than internal combustion vehicles. [89]

One limitation of the environmental potential of EVs is that simply switching the existing privately owned car fleet from ICEs to EVs will not free up road space for active travel or public transport. [90] Electric micromobility vehicles, such as e-bikes, may contribute to the decarbonisation of transport systems, especially outside of urban areas which are already well-served by public transport. [91]

Internal combustion engined vehicles use far more raw materials over their lifetime than EVs. [92]

Since their first commercial release in 1991, lithium-ion batteries have become an important technology for achieving low-carbon transportation systems. The sustainability of production process of batteries has not been fully assessed in either economic, social or environmental terms. [93]

Business processes of raw material extraction in practice raise issues of transparency and accountability of the management of extractive resources. In the complex supply chain of lithium technology, there are diverse stakeholders representing corporate interests, public interest groups and political elites that are concerned with outcomes from the technology production and use. One possibility to achieve balanced extractive processes would be the establishment of commonly agreed standards on the governance of technology worldwide. [93]

The compliance of these standards can be assessed by the Assessment of Sustainability in Supply Chains Frameworks (ASSC). Hereby, the qualitative assessment consists of examining governance and social and environmental commitment. Indicators for the quantitative assessment are management systems and standards, compliance and social and environmental indicators. [94]

One source estimates that over a fifth of the lithium and about 65% of the cobalt needed for electric cars will be from recycled sources by 2035. [95] Thus, much of the raw materials involved in EV production will rely on the extraction of scarce metallic ores.[ improper synthesis? ] On the other hand, when counting the large quantities of fossil fuel non-electric cars consume over their lifetime, electric cars can be considered to dramatically reduce raw-material needs. [95]

Socio-economic

A 2003 study in the United Kingdom found that "[p]ollution is most concentrated in areas where young children and their parents are more likely to live and least concentrated in areas to which the elderly tend to migrate," and that "those communities that are most polluted and which also emit the least pollution tend to be amongst the poorest in Britain." [96] A 2019 UK study found that "households in the poorest areas emit the least NOx and PM, whilst the least poor areas emitted the highest, per km, vehicle emissions per household through having higher vehicle ownership, owning more diesel vehicles and driving further." [97]

Mechanical

Tesla Model S chassis with drive motor Tesla Motors Model S base.JPG
Tesla Model S chassis with drive motor
Cutaway view of a Tesla Model S drive motor Tesla Model S motor cutout.jpg
Cutaway view of a Tesla Model S drive motor

Electric motors are mechanically very simple and often achieve 90% energy conversion efficiency [98] over the full range of speeds and power output and can be precisely controlled. They can also be combined with regenerative braking systems that have the ability to convert movement energy back into stored electricity. This can be used to reduce the wear on brake systems (and consequent brake pad dust) and reduce the total energy requirement of a trip. Regenerative braking is especially effective for start-and-stop city use.

They can be finely controlled and provide high torque from stationary-to-moving, unlike internal combustion engines, and do not need multiple gears to match power curves. This removes the need for gearboxes and torque converters.

EVs provide quiet and smooth operation and consequently have less noise and vibration than internal combustion engines. [99] While this is a desirable attribute, it has also evoked concern that the absence of the usual sounds of an approaching vehicle poses a danger to blind, elderly and very young pedestrians. To mitigate this situation, many countries mandate warning sounds when EVs are moving slowly, up to a speed when normal motion and rotation (road, suspension, electric motor, etc.) noises become audible. [100]

Electric motors do not require oxygen, unlike internal combustion engines; this is useful for submarines and for space rovers.

Energy resilience

Electricity can be produced from a variety of sources; therefore, it gives the greatest degree of energy resilience. [101]

Energy efficiency

EV 'tank-to-wheels' efficiency is about a factor of three higher than internal combustion engine vehicles. [99] Energy is not consumed while the vehicle is stationary, unlike internal combustion engines which consume fuel while idling. However, looking at the well-to-wheel efficiency of EVs, their total emissions, while still lower,[ clarification needed ] are closer[ clarification needed ] to an efficient gasoline or diesel in most countries where electricity generation relies on fossil fuels. [102] [103]

Well-to-wheel efficiency of an EV has less to do with the vehicle itself and more to do with the method of electricity production. A particular EV would instantly become twice as efficient if electricity production were switched from fossil fuels to renewable energy, such as wind power, tidal power, solar power, and nuclear power. Thus, when "well-to-wheels" is cited, the discussion is no longer about the vehicle, but rather about the entire energy supply infrastructure in the case of fossil fuels this should also include energy spent on exploration, mining, refining, and distribution.

The lifecycle analysis of EVs shows that even when powered by the most carbon-intensive electricity in Europe, they emit less greenhouse gases than a conventional diesel vehicle. [104]

Total cost

As of 2021 the purchase price of an EV is often more, but the total cost of ownership of an EV varies wildly depending on location [105] and distance travelled per year: [106] in parts of the world where fossil fuels are subsidized, lifecycle costs of diesel or gas-powered vehicle are sometimes less than a comparable EV. [107]

Range

Electric vehicles may have shorter range compared to vehicles with internal combustion engines, [108] [109] which is why large electric ships generally cannot cross oceans as of 2021. [110] A new range of EV safari vehicles is slated to come out in 2023 which will have a range of 500km, roughly 310 miles, which will be a bigger range compared to fuel safari vehicles. [111]

Heating of EVs

In cold climates, considerable energy is needed to heat the interior of a vehicle and to defrost the windows. With internal combustion engines, this heat already exists as waste combustion heat diverted from the engine cooling circuit. This process offsets the greenhouse gases' external costs. If this is done with battery EVs, the interior heating requires extra energy from the vehicles' batteries. Although some heat could be harvested from the motor or motors and battery, their greater efficiency means there is not as much waste heat available as from a combustion engine.

However, for vehicles which are connected to the grid, battery EVs can be preheated, or cooled, with little or no need for battery energy, especially for short trips.

Newer designs are focused on using super-insulated cabins which can heat the vehicle using the body heat of the passengers. This is not enough, however, in colder climates as a driver delivers only about 100 W of heating power. A heat pump system, capable of cooling the cabin during summer and heating it during winter, is a more efficient way of heating and cooling EVs. [112]

Electric public transit efficiency

Shifts from private to public transport (train, trolleybus, personal rapid transit or tram) have the potential for large gains in efficiency in terms of an individual's distance traveled per kWh.

Research shows people prefer trams to buses, [113] because they are quieter and more comfortable and perceived as having higher status. [114] Therefore, it may be possible to cut liquid fossil fuel consumption in cities through the use of electric trams. Trams may be the most energy-efficient form of public transportation, with rubber-wheeled vehicles using two-thirds more energy than the equivalent tram,[ citation needed ] and run on electricity rather than fossil fuels.

In terms of net present value, they are also the cheapest  Blackpool trams are still running after 100 years, [115] but combustion buses only last about 15 years.

Polluter pays principle

The IEA suggests that taxing inefficient internal combustion engine vehicles could eventually become a means to finance subsidies for EVs. [8] Government procurement is sometimes used to encourage national EV manufacturers. [116] [117] Many countries will ban sales of fossil fuel vehicles between 2025 and 2040. [118]

Many governments offer incentives to promote the use of electric vehicles, with the goals of reducing air pollution and oil consumption. Some incentives intend to increase purchases of electric vehicles by offsetting the purchase price with a grant. Other incentives include lower tax rates or exemption from certain taxes, and investment in charging infrastructure.

Companies selling EVs have partnered with local electric utilities in order to provide large incentives on some electric vehicles. [119]

Future

Rimac Concept One, electric supercar, since 2013. 0 to 100 km/h in 2.8 seconds, with a total output of 800 kW (1,073 hp). Salon Prive London 2012 (7956529248).jpg
Rimac Concept One, electric supercar, since 2013. 0 to 100 km/h in 2.8 seconds, with a total output of 800 kW (1,073 hp).

The COVID-19 pandemic gave birth to proposals for radical change in the organisation of the city, such as the Manifesto for the Reorganisation of the City after COVID-19, published in Barcelona and signed by 160 academics and 300 architects, highly critical towards a transportation based on the private electric vehicle considered as a false solution. [120] [121] [122]

Public perception

A European survey based on climate found that as of 2022, 39% of European citizens tend to prefer hybrid vehicles, while 33% prefer petrol or diesel vehicles. The least preferred type of vehicles are electric cars, preferred by 28% of Europeans. [123] 44% Chinese car buyers are the most likely to buy an electric car, while 38% of Americans would opt for a hybrid car, 33% would prefer petrol or diesel, while only 29% would go for an electric car. [123]

Environmental considerations

Vehicle batteries rely heavily on the mining industry of rare earth metals such as cobalt, nickel, and copper. [124] [125] According to a 2018 study, the supplies of mined metals would need to increase 87,000% by 2060 globally for transition to battery-powered EVs. Rare-earth metals (neodymium, dysprosium) and other mined metals (copper, nickel, iron) are used by EV motors, while lithium, cobalt, manganese are used by the batteries. [126] [125]

An alternative method of sourcing essential battery materials being deliberated by the International Seabed Authority is deep sea mining of these metals. [127]

Improved batteries

Advances in lithium-ion batteries, driven at first by the personal-use electronics industry, allow full-sized, highway-capable EVs to travel nearly as far on a single charge as conventional cars go on a single tank of gasoline. Lithium batteries have been made safe, can be recharged in minutes instead of hours (see recharging time), and now last longer than the typical vehicle (see lifespan). The production cost of these lighter, higher-capacity lithium-ion batteries is gradually decreasing as the technology matures and production volumes increase. [128] [129]

Many companies and researchers are also working on newer battery technologies, including solid state batteries [130] and alternate technologies. [131]

Battery management and intermediate storage

Another improvement is to decouple the electric motor from the battery through electronic control, using supercapacitors to buffer large but short power demands and regenerative braking energy. [132] The development of new cell types combined with intelligent cell management improved both weak points mentioned above. The cell management involves not only monitoring the health of the cells but also a redundant cell configuration (one more cell than needed). With sophisticated switched wiring, it is possible to condition one cell while the rest are on duty.[ citation needed ]

Electric trucks

Smith Edison, based on the Ford Transit Electric Ford Transit (4369116244).jpg
Smith Edison, based on the Ford Transit
Electric Renault Midlum used by Nestle in 2015 E-Truck Renault Midlum Electric.jpg
Electric Renault Midlum used by Nestlé in 2015

An electric truck is an electric vehicle powered by batteries designed to transport cargo, carry specialized payloads, or perform other utilitarian work.

Electric trucks have serviced niche applications like milk floats, pushback tugs and forklifts for over a hundred years, typically using lead-acid batteries, but the rapid development of lighter and more energy-dense battery chemistries in the twenty-first century has broadened the range of applicability of electric propulsion to trucks in many more roles.

Electric trucks reduce noise and pollution, relative to internal-combustion trucks. Due to the high efficiency and low component-counts of electric power trains, no fuel burning while idle, and silent and efficient acceleration, the costs of owning and operating electric trucks are dramatically lower than their predecessors. [133] [134] According to the United States Department of Energy, the average cost per kWh capacity of battery packs for trucks fell from $500 in 2013 to $200 in 2019, and still further to $137 in 2020, with some vehicles under $100 for the first time. [135] [136]

Long-distance freight has been the trucking segment least amenable to electrification, since the increased weight of batteries, relative to fuel, detracts from payload capacity, and the alternative, more frequent recharging, detracts from delivery time. By contrast, short-haul urban delivery has been electrified rapidly, since the clean and quiet nature of electric trucks fit well with urban planning and municipal regulation, and the capacities of reasonably-sized batteries are well-suited to daily stop-and-go traffic within a metropolitan area. [137] [138] [139]

In South Korea, electric trucks hold a noticeable share of the new truck market; in 2020, among trucks produced and sold domestically (which are the vast majority of new trucks sold in the country), 7.6% were all-electric vehicles. [140]

Hydrogen trains

Particularly in Europe, fuel-cell electric trains are gaining in popularity to replace diesel-electric units. In Germany, several Länder have ordered Alstom Coradia iLINT trainsets, in service since 2018, [141] with France also planning to order trainsets. [142] The United Kingdom, the Netherlands, Denmark, Norway, Italy, Canada [141] and Mexico [143] are equally interested. In France, the SNCF plans to replace all its remaining diesel-electric trains with hydrogen trains by 2035. [144] In the United Kingdom, Alstom announced in 2018 their plan to retrofit British Rail Class 321 trainsets with fuel cells. [145]

Infrastructure management

With the increase in number of electric vehicles, it is necessary to create an appropriate number of charging stations to supply the increasing demand, [146] and a proper management system that coordinates the charging turn of each vehicle to avoid having some charging stations overloaded with vehicles and others empty. [147]

Stabilization of the grid

Since EVs can be plugged into the electric grid when not in use, there is a potential for battery-powered vehicles to cut the demand for electricity by feeding electricity into the grid from their batteries during peak use periods (such as mid-afternoon air conditioning use) while doing most of their charging at night, when there is unused generating capacity. [148] [149] This vehicle-to-grid (V2G) connection has the potential to reduce the need for new power plants, as long as vehicle owners do not mind reducing the life of their batteries, by being drained by the power company during peak demand. Electric vehicle parking lots can provide demand response. [150]

Furthermore, current electricity infrastructure may need to cope with increasing shares of variable-output power sources such as wind and solar. This variability could be addressed by adjusting the speed at which EV batteries are charged, or possibly even discharged.

Some concepts see battery exchanges and battery charging stations, much like gas/petrol stations today. These will require enormous storage and charging potentials, which could be manipulated to vary the rate of charging, and to output power during shortage periods, much as diesel generators are used for short periods to stabilize some national grids. [151] [152]

See also

Notes

  1. Commonly, the term EV is used to refer to an electric car but in this article it means "electric vehicle".

    Related Research Articles

    <span class="mw-page-title-main">Hybrid vehicle</span> Vehicle using two or more power sources

    A hybrid vehicle is one that uses two or more distinct types of power, such as submarines that use diesel when surfaced and batteries when submerged. Other means to store energy include pressurized fluid in hydraulic hybrids.

    <span class="mw-page-title-main">Zero-emissions vehicle</span> Class of motor vehicle

    A zero-emission vehicle, or ZEV, is a vehicle that does not emit exhaust gas or other pollutants from the onboard source of power. The California definition also adds that this includes under any and all possible operational modes and conditions. This is because under cold-start conditions for example, internal combustion engines tend to produce the maximum amount of pollutants. In a number of countries and states, transport is cited as the main source of greenhouse gases (GHG) and other pollutants. The desire to reduce this is thus politically strong.

    <span class="mw-page-title-main">Toyota RAV4 EV</span> Motor vehicle

    The Toyota RAV4 EV is an all-electric version of the popular RAV4 SUV produced by Toyota until 2014. Two generations of the EV model were sold in California, and to fleets elsewhere in the US, with a gap of almost ten years between them.

    Hybrid Synergy Drive (HSD), also known as Toyota Hybrid System II, is the brand name of Toyota Motor Corporation for the hybrid car drive train technology used in vehicles with the Toyota and Lexus marques. First introduced on the Prius, the technology is an option on several other Toyota and Lexus vehicles and has been adapted for the electric drive system of the hydrogen-powered Mirai, and for a plug-in hybrid version of the Prius. Previously, Toyota also licensed its HSD technology to Nissan for use in its Nissan Altima Hybrid. Its parts supplier Aisin Seiki Co. offers similar hybrid transmissions to other car companies.

    <span class="mw-page-title-main">Plug-in hybrid</span> Hybrid vehicle whose battery may be externally charged

    A plug-in hybrid electric vehicle (PHEV) is a hybrid electric vehicle whose battery pack can be recharged by plugging a charging cable into an external electric power source, in addition to internally by its on-board internal combustion engine-powered generator. Most PHEVs are passenger cars, but there are also PHEV versions of commercial vehicles and vans, utility trucks, buses, trains, motorcycles, mopeds, and even military vehicles.

    <span class="mw-page-title-main">Electric vehicle conversion</span> Process of converting a vehicle to use electric propulsion

    In automobile engineering, electric vehicle conversion is the replacement of a car's combustion engine and connected components with an electric motor and batteries, to create an all-electric vehicle (AEV).

    <span class="mw-page-title-main">Electric truck</span> Battery propelled freight motor vehicle

    An electric truck is an electric vehicle powered by batteries designed to transport cargo, carry specialized payloads, or perform other utilitarian work.

    Hybrid vehicle drivetrains transmit power to the driving wheels for hybrid vehicles. A hybrid vehicle has multiple forms of motive power.

    Aluminium–air batteries produce electricity from the reaction of oxygen in the air with aluminium. They have one of the highest energy densities of all batteries, but they are not widely used because of problems with high anode cost and byproduct removal when using traditional electrolytes. This has restricted their use to mainly military applications. However, an electric vehicle with aluminium batteries has the potential for up to eight times the range of a lithium-ion battery with a significantly lower total weight.

    <span class="mw-page-title-main">Electric vehicle battery</span> Battery used to power the electric motors of a battery electric vehicle or hybrid electric vehicle

    An electric vehicle battery is a rechargeable battery used to power the electric motors of a battery electric vehicle (BEV) or hybrid electric vehicle (HEV). Typically lithium-ion batteries, they are specifically designed for high electric charge capacity.

    <span class="mw-page-title-main">Electric car</span> Car propelled by an electric motor using energy stored in batteries

    An electric car, battery electric car, or all-electric car is an automobile that is propelled by one or more electric motors, using only energy stored in batteries. Compared to internal combustion engine (ICE) vehicles, electric cars are quieter, have no exhaust emissions, and lower emissions overall. In the United States and the European Union, as of 2020, the total cost of ownership of recent electric vehicles is cheaper than that of equivalent ICE cars, due to lower fueling and maintenance costs. Charging an electric car can be done at a variety of charging stations; these charging stations can be installed in both houses and public areas.

    <span class="mw-page-title-main">Battery electric vehicle</span> Type of electric vehicle

    A battery electric vehicle (BEV), pure electric vehicle, only-electric vehicle, fully electric vehicle or all-electric vehicle is a type of electric vehicle (EV) that exclusively uses chemical energy stored in rechargeable battery packs, with no secondary source of propulsion. BEVs use electric motors and motor controllers instead of internal combustion engines (ICEs) for propulsion. They derive all power from battery packs and thus have no internal combustion engine, fuel cell, or fuel tank. BEVs include – but are not limited to – motorcycles, bicycles, scooters, skateboards, railcars, watercraft, forklifts, buses, trucks, and cars.

    <span class="mw-page-title-main">Plug-in electric vehicle</span> Type of vehicle

    A plug-in electric vehicle (PEV) is any road vehicle that can utilize an external source of electricity to store electrical power within its onboard rechargeable battery packs, which then powers the electric motor and contributes to propelling the wheels. PEV is a subset of electric vehicles, and includes all-electric/battery electric vehicles (BEVs) and plug-in hybrid vehicles (PHEVs). Sales of the first series production plug-in cars began in December 2008 with the introduction of the plug-in hybrid BYD F3DM, and then with the all-electric Mitsubishi i-MiEV in July 2009, but global retail sales only gained traction after the introduction of the mass production all-electric Nissan Leaf and the plug-in hybrid Chevrolet Volt in December 2010.

    <span class="mw-page-title-main">Range extender</span>

    A range extender is a fuel-based auxiliary power unit (APU) that extends the range of a battery electric vehicle by driving an electric generator that charges the vehicle's battery. This arrangement is known as a series hybrid drivetrain. The most commonly used range extenders are internal combustion engines, but fuel-cells or other engine types can be used.

    <span class="mw-page-title-main">Range anxiety</span> Fear of insufficient vehicle range, especially in electric vehicles

    Range anxiety is the driver's fear that a vehicle has insufficient energy storage to cover the road distance needed to reach its intended destination, and would thus strand the vehicle's occupants mid-way. The term, which is now primarily used in reference to battery electric vehicles (BEVs), is considered to be one of the major psychological barriers to large-scale public adoption of electric cars.

    <span class="mw-page-title-main">Hyundai Blue-Will</span> Motor vehicle

    The Hyundai Blue-Will is a plug-in petrol-electric hybrid concept compact car designed by the South Korean car manufacturer Hyundai Motor Company. The vehicle was debuted at the 2009 Seoul Motor Show in South Korea.

    <span class="mw-page-title-main">Electric vehicle industry in China</span>

    The electric vehicle industry in China is the largest in the world, accounting for around 57.4% of global production of electric vehicles (EVs) and around 500,000 exports in 2021. In 2021, CAAM reported China had sold 3.34 million passenger electric vehicles, consisting 2.73 million BEVs and 0.6 million PHEV, which is around 53% share of the global market of 6.23 million "new energy" passenger vehicles – BEVs, PHEVs, and HEVs. China also dominates the plug-in electric bus and light commercial vehicle market, reaching over 500,000 buses and 247,500 electric commercial vehicles in 2019, and recording new sales of 186,000 commercial EVs in 2021.

    <span class="mw-page-title-main">Hyundai Ioniq</span> Compact car

    The Hyundai Ioniq is a compact five-door liftback manufactured and marketed by Hyundai. The nameplate Ioniq is a portmanteau of ion and unique. It is marketed as the first automobile to be offered without a standard internal combustion engine, but rather sold in hybrid, plug-in hybrid, and all-electric variants.

    <span class="mw-page-title-main">Environmental footprint of electric cars</span>

    Electric cars have a smaller environmental footprint than conventional internal combustion engine vehicles (ICEVs). While aspects of their production can induce similar, less or alternative environmental impacts, they produce little or no tailpipe emissions, and reduce dependence on petroleum, greenhouse gas emissions, and health effects from air pollution. Electric motors are significantly more efficient than internal combustion engines and thus, even accounting for typical power plant efficiencies and distribution losses, less energy is required to operate an EV. Manufacturing batteries for electric cars requires additional resources and energy, so they may have a larger environmental footprint from the production phase. EVs also generate different impacts in their operation and maintenance. EVs are typically heavier and could produce more tire, brake, and road dust air pollution, but their regenerative braking could reduce such particulate pollution from brakes. EVs are mechanically simpler, which reduces the use and disposal of engine oil.

    There are numerous versions of vehicle propulsion systems. Many of those came into fruition due to need for cleaner vehicles. Each of them might have many abbreviations and some might be misleading. This article explains shortly what defines them.

    References

    1. Asif Faiz; Christopher S. Weaver; Michael P. Walsh (1996). Air Pollution from Motor Vehicles: Standards and Technologies for Controlling Emissions. World Bank Publications. p. 227. ISBN   978-0-8213-3444-7. Archived from the original on 4 July 2021. Retrieved 4 December 2017.
    2. Hamid, Umar Zakir Abdul (2022). "Autonomous, Connected, Electric and Shared Vehicles: Disrupting the Automotive and Mobility Sectors" . Retrieved 11 November 2022.{{cite journal}}: Cite journal requires |journal= (help)
    3. "Electric Cars @ProjectDrawdown #ClimateSolutions". Project Drawdown. 6 February 2020. Archived from the original on 27 November 2020. Retrieved 20 November 2020.
    4. "FACT SHEET: Obama Administration Announces Federal and Private Sector Actions to Accelerate Electric Vehicle Adoption in the United States". Energy.gov. Archived from the original on 3 June 2021. Retrieved 3 June 2021.
    5. "EU policy-makers seek to make electric transport a priority". Reuters . 3 February 2015. Archived from the original on 23 February 2017. Retrieved 2 July 2017.
    6. Transport, Chapter 10 in "Climate Change 2022: Mitigation of Climate Change". www.ipcc.ch. Retrieved 5 April 2022.
    7. 1 2 "Global EV Outlook 2021 / Technology Report". IEA.org. International Energy Agency. April 2021. Archived from the original on 29 April 2021.
    8. 1 2 IEA (2022), Global EV Outlook 2022, IEA, Paris https://www.iea.org/reports/global-ev-outlook-2022
    9. "Are electric vehicle projections underestimating demand?". Automotive World. 30 March 2021. Archived from the original on 2 June 2021. Retrieved 6 June 2021.
    10. 1 2 "Electric vehicles". Deloitte Insights. Archived from the original on 6 June 2021. Retrieved 6 June 2021.
    11. "The electric-vehicle outlook is stronger in China and Europe than in the United States | McKinsey & Company". www.mckinsey.com. Archived from the original on 6 June 2021. Retrieved 6 June 2021.
    12. "Electric Vehicle (EV) Industry Statistics and Forecasts". EVhype. 30 August 2022. Retrieved 31 October 2022.{{cite web}}: CS1 maint: url-status (link)
    13. Rajper, Sarmad Zaman; Albrecht, Johan (January 2020). "Prospects of Electric Vehicles in the Developing Countries: A Literature Review". Sustainability. 12 (5): 1906. doi: 10.3390/su12051906 .
    14. "Prospects for electric vehicle deployment – Global EV Outlook 2021 – Analysis". IEA. Archived from the original on 29 July 2021. Retrieved 29 July 2021.
    15. Guarnieri, M. (2012). "Looking back to electric cars". 2012 Third IEEE HISTory of ELectro-technology CONference (HISTELCON). Proc. HISTELCON 2012 – 3rd Region-8 IEEE HISTory of Electro – Technology CONference: The Origins of Electrotechnologies. pp. 1–6. doi:10.1109/HISTELCON.2012.6487583. ISBN   978-1-4673-3078-7. S2CID   37828220.
    16. mary bellis (16 June 2010). "Inventors – Electric Cars (1890–1930)". Inventors.about.com. Archived from the original on 4 July 2021. Retrieved 26 December 2010.
    17. "History of Railway Electric Traction". Mikes.railhistory.railfan.net. Archived from the original on 24 August 2018. Retrieved 26 December 2010.
    18. Hendry, Maurice M. Studebaker: One can do a lot of remembering in South Bend. New Albany, Indiana: Automobile Quarterly. pp. 228–275. Vol X, 3rd Q, 1972. p231
    19. 1 2 Taalbi, Josef; Nielsen, Hana (2021). "The role of energy infrastructure in shaping early adoption of electric and gasoline cars". Nature Energy. 6 (10): 970–976. Bibcode:2021NatEn...6..970T. doi:10.1038/s41560-021-00898-3. ISSN   2058-7546. S2CID   242383930.
    20. pp.8–9 Batten, Chris Ambulances Osprey Publishing, 4 March 2008
    21. "Escaping Lock-in: the Case of the Electric Vehicle". Cgl.uwaterloo.ca. Archived from the original on 23 September 2015. Retrieved 26 December 2010.
    22. AAA World Magazine. Jan–Feb 2011, p. 53
    23. Kirsch, David (2000). The electric vehicle and the burden of history. Rutgers University Press.
    24. Mom, Gijs (15 February 2013). The Electric Vehicle: Technology and Expectations in the Automobile Age. JHU Press. ISBN   978-1-4214-1268-9.
    25. See Loeb, A.P., "Steam versus Electric versus Internal Combustion: Choosing the Vehicle Technology at the Start of the Automotive Age," Transportation Research Record, Journal of the Transportation Research Board of the National Academies, No. 1885, at 1.
    26. Automobile, archived from the original on 30 April 2015, retrieved 18 July 2009
    27. Scharff, Virginia (1992). Taking the Wheel: Women and the Coming of the Motor Age. Univ. New Mexico Press.
    28. Matthe, Roland; Eberle, Ulrich (1 January 2014). The Voltec System – Energy Storage and Electric Propulsion. pp. 151–176. ISBN   978-0-444-59513-3. Archived from the original on 9 October 2020. Retrieved 4 May 2014.
    29. Bellis, M. (2006), "The Early Years", The History of Electric Vehicles, About.com, archived from the original on 4 July 2021, retrieved 6 July 2006
    30. Quiroga, Tony (August 2009). Driving the Future. Hachette Filipacchi Media U.S., Inc. p. 52.
    31. Freeman, Sunny (9 December 2009). "The end of Zenn". The Globe and Mail. Toronto. Retrieved 25 May 2022.
    32. Eberle, Ulrich; von Helmolt, Rittmar (14 May 2010). "Sustainable transportation based on EV concepts: a brief overview". Energy & Environmental Science. 3 (6): 689. doi:10.1039/c001674h. ISSN   1754-5692. Archived from the original on 21 October 2013. Retrieved 8 June 2010.
    33. Notter, Dominic A.; Kouravelou, Katerina; Karachalios, Theodoros; Daletou, Maria K.; Haberland, Nara Tudela (3 July 2015). "Life cycle assessment of PEM FC applications: electric mobility and μ-CHP". Energy Environ. Sci. 8 (7): 1969–1985. doi:10.1039/C5EE01082A. ISSN   1754-5692.
    34. Notter, Dominic A.; Gauch, Marcel; Widmer, Rolf; Wäger, Patrick; Stamp, Anna; Zah, Rainer; Althaus, Hans-Jörg (1 September 2010). "Contribution of Li-Ion Batteries to the Environmental Impact of Electric Vehicles". Environmental Science & Technology. 44 (17): 6550–6556. Bibcode:2010EnST...44.6550N. doi:10.1021/es903729a. ISSN   0013-936X. PMID   20695466.
    35. "World's first electrified road for charging vehicles opens in Sweden". Guardian. 12 April 2018. Archived from the original on 1 September 2019. Retrieved 1 September 2019.
    36. Richardson, D.B. (March 2013). "Electric vehicles and the electric grid: A review of modeling approaches, Impacts, and renewable energy integration". Renewable and Sustainable Energy Reviews. 19: 247–254. doi:10.1016/j.rser.2012.11.042.
    37. Liu, Chaofeng; Neale, Zachary G.; Cao, Guozhong (1 March 2016). "Understanding electrochemical potentials of cathode materials in rechargeable batteries". Materials Today. 19 (2): 109–123. doi:10.1016/j.mattod.2015.10.009.
    38. Ziegler, Micah S.; Trancik, Jessika E. (2021). "Re-examining rates of lithium-ion battery technology improvement and cost decline". Energy & Environmental Science. 14 (4): 1635–1651. doi:10.1039/D0EE02681F. ISSN   1754-5692. S2CID   220830992.
    39. "The price of batteries has declined by 97% in the last three decades". Our World in Data. Retrieved 26 April 2022.
    40. Lu, L.; Han, X.; Li, J.; Hua, J.; Ouyang, M. (2013). "A review on the key issues for lithium-ion battery management in electric vehicles". Journal of Power Sources. 226: 272–288. Bibcode:2013JPS...226..272L. doi:10.1016/j.jpowsour.2012.10.060. ISSN   0378-7753.
    41. Adany, Ron (June 2013). "Switching algorithms for extending battery life in Electric Vehicles". Journal of Power Sources. 231: 50–59. doi:10.1016/j.jpowsour.2012.12.075. ISSN   0378-7753.
    42. Mok, Brian. "Types of Batteries Used for Electric Vehicles". large.stanford.edu. Archived from the original on 19 December 2017. Retrieved 30 November 2017.
    43. "Alternative Fuels Data Center: Batteries for Hybrid and Plug-In Electric Vehicles". afdc.energy.gov. AFDC. Archived from the original on 1 December 2017. Retrieved 30 November 2017.
    44. "Chevron and EVs – GM, Chevron and CARB killed the sole NiMH EV once, will do so again". ev1.org. Archived from the original on 22 November 2017. Retrieved 30 November 2017.
    45. Aditya, Jayam; Ferdowsi, Mehdi. "Comparison of NiMH and Li-Ion Batteries in Automotive Applications". Power Electronics and Motor Drives Laboratory. Archived from the original on 1 December 2017. Retrieved 30 November 2017.
    46. "Bloomberg's Latest Forecast Predicts Rapidly Falling Battery Prices". 21 June 2018. Archived from the original on 8 January 2019. Retrieved 4 January 2019.
    47. Voelcker, John (10 April 2021). "EVs Explained: Charging Losses". Car and Driver. Archived from the original on 27 July 2021. Retrieved 27 July 2021.
    48. Widmar, Martin (2015). "Electric vehicle traction motors without rare earth magnets". Sustainable Materials and Technologies. 3: 7–13. doi: 10.1016/j.susmat.2015.02.001 . ISSN   2214-9937.
    49. "Alternative Fuels Data Center: How do Hybrid Electric Cars Work?".
    50. "Electric Vehicles Types - A Complete Guide to Types of EV - EVESCO". Power Sonic. 18 March 2022.
    51. David B. Sandalow, ed. (2009). Plug-In Electric Vehicles: What Role for Washington? (1st. ed.). The Brookings Institution. pp. 2–5. ISBN   978-0-8157-0305-1. Archived from the original on 28 March 2019. Retrieved 7 July 2013.See definition on pp. 2.
    52. "Plug-in Electric Vehicles (PEVs)". Center for Sustainable Energy, California. Archived from the original on 20 June 2010. Retrieved 31 March 2010.
    53. "PEV Frequently Asked Questions". Duke Energy. Archived from the original on 27 March 2012. Retrieved 24 December 2010.
    54. "Electric road vehicles in the European Union" (PDF). europa.eu. Archived (PDF) from the original on 14 February 2020. Retrieved 24 October 2020.
    55. "Electric Driveline Technology – PVI, leader de la traction électrique pour véhicules industriels". Pvi.fr. Archived from the original on 25 March 2012. Retrieved 30 March 2012.
    56. "-Maglev Technology Explained". North American Maglev Transport Institute. 1 January 2011. Archived from the original on 27 July 2011.
    57. Lyons, Pete; "10 Best Ahead-of-Their-Time Machines", Car and Driver, Jan. 1988, p.78
    58. "Technologies of Broad Benefit: Power". Archived from the original on 18 January 2017. Retrieved 6 September 2018.
    59. "Soviet Union Lunar Rovers". Archived from the original on 2 November 2018. Retrieved 6 September 2018.
    60. "Oceanvolt – Complete Electric Motor Systems". Oceanvolt. Archived from the original on 24 December 2012. Retrieved 30 November 2012.
    61. Stensvold, Tore. "Lønnsomt å bytte ut 70 prosent av fergene med batteri- eller hybridferger Archived 5 January 2016 at the Wayback Machine " Teknisk Ukeblad , 14. August 2015.
    62. "S-80: A Sub, for Spain, to Sail Out on the Main". Defense Industry Daily. 15 December 2008. Archived from the original on 24 February 2010. Retrieved 17 December 2009.
    63. "Contributions to Deep Space 1". 14 April 2015. Archived from the original on 10 December 2004. Retrieved 4 August 2016.
    64. Cybulski, Ronald J.; Shellhammer, Daniel M.; Lovell, Robert R.; Domino, Edward J.; Kotnik, Joseph T. (1965). "Results from SERT I Ion Rocket Flight Test" (PDF). NASA. NASA-TN-D-2718. Archived (PDF) from the original on 12 November 2020. Retrieved 12 November 2020.
    65. "interestingengineering.com". November 2021.
    66. Holl, Dr Maximilian (5 July 2019). "Tesla Model 3 Breaks World EV Distance Record — 2,781 km (1,728 mi) Travelled In 24 Hours". CleanTechnica. Retrieved 15 May 2022.
    67. "Greatest distance by electric vehicle, single charge (non-solar)". Guinness World Records. Retrieved 15 May 2022.
    68. "Harley-Davidson's LiveWire EV | GreenCars". www.greencars.com. Retrieved 15 May 2022.
    69. Toll, Micah (29 August 2020). "Believe it or not, this electric plane is set to break 7 world records in one trip". Electrek. Retrieved 15 May 2022.
    70. Seitz, C.W. (May 1994). "Industrial battery technologies and markets". IEEE Aerospace and Electronic Systems Magazine. 9 (5): 10–15. doi:10.1109/62.282509. ISSN   0885-8985 . Retrieved 3 September 2022.
    71. Tofield, Bruce C. (1985). "Future Prospects for All-Solid-State Batteries". Solid State Batteries. Springer Netherlands. p. 424. doi:10.1007/978-94-009-5167-9_29. ISBN   978-94-010-8786-5 . Retrieved 3 September 2022.
    72. "All-Electric Vehicles". www.fueleconomy.gov. Archived from the original on 17 December 2016. Retrieved 19 January 2020.
    73. "EVO Report 2021 | BloombergNEF | Bloomberg Finance LP". BloombergNEF. Archived from the original on 27 July 2021. Retrieved 27 July 2021.
    74. Dobley, Arthur (2013). "1: Catalytic Batteries". In Suib, Steven (ed.). New and Future Developments in Catalysis: Batteries, Hydrogen Storage and Fuel Cells. Elsevier. p. 13. ISBN   9780444538819 . Retrieved 29 October 2022.
    75. 1 2 3 4 5 D Bateman; et al. (8 October 2018), Electric Road Systems: a solution for the future (PDF), TRL, archived (PDF) from the original on 3 August 2020, retrieved 10 February 2021
    76. 1 2 3 4 5 Analysera förutsättningar och planera för en utbyggnad av elvägar, Swedish Transport Administration, 2 February 2021, archived from the original on 3 February 2021, retrieved 10 February 2021
    77. Regler för statliga elvägar SOU 2021:73 (PDF), Regeringskansliet (Government Offices of Sweden), 1 September 2021, pp. 69–87, archived from the original (PDF) on 2 September 2021
    78. PIARC (17 February 2021), Electric Road Systems - PIARC Online Discussion, 34 minutes 34 seconds, archived from the original on 22 December 2021
    79. Martin G. H. Gustavsson, ed. (26 March 2021), "Key Messages on Electric Roads - Executive Summary from the CollERS Project" (PDF), CollERS, p. 6, retrieved 11 February 2022
    80. European Commission (14 July 2021), Proposal for a REGULATION OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL on the deployment of alternative fuels infrastructure, and repealing Directive 2014/94/EU of the European Parliament and of the Council
    81. Patrick Pélata; et al. (July 2021), Système de route électrique. Groupe de travail n°1 (PDF), archived from the original (PDF) on 2 October 2021
    82. "PD CLC/TS 50717 Technical Requirements for Current Collectors for ground-level feeding system on road vehicles in operation", The British Standards Institution , 2022, archived from the original on 23 April 2022, retrieved 23 April 2022
    83. Choi, Yun Seok; Kim, Seok; Choi, Soo Seok; Han, Ji Sung; Kim, Jan Dee; Jeon, Sang Eun; Jung, Bok Hwan (30 November 2004). "Electrochimica Acta : Effect of cathode component on the energy density of lithium–sulfur battery". Electrochimica Acta. 50 (2–3): 833–835. doi:10.1016/j.electacta.2004.05.048.
    84. Nazar, L. F.; Toghill, K.; Makimura, Y.; Makahnouk, W. R. M.; Ellis, B. L. (October 2007). "A multifunctional 3.5V iron-based phosphate cathode for rechargeable batteries". Nature Materials. 6 (10): 749–753. Bibcode:2007NatMa...6..749E. doi:10.1038/nmat2007. PMID   17828278.
    85. "EUROPA Press Releases – Car safety: European Commission welcomes international agreement on electric and hybrid cars". Europa (web portal). 10 March 2010. Archived from the original on 16 April 2010. Retrieved 26 June 2010.
    86. Michalek; Chester; Jaramillo; Samaras; Shiau; Lave (2011). "Valuation of plug-in vehicle life cycle air emissions and oil displacement benefits". Proceedings of the National Academy of Sciences. 108 (40): 16554–16558. Bibcode:2011PNAS..10816554M. doi: 10.1073/pnas.1104473108 . PMC   3189019 . PMID   21949359.
    87. Tessum; Hill; Marshall (2014). "Life cycle air quality impacts of conventional and alternative light-duty transportation in the United States". Proceedings of the National Academy of Sciences. 111 (52): 18490–18495. Bibcode:2014PNAS..11118490T. doi: 10.1073/pnas.1406853111 . PMC   4284558 . PMID   25512510.
    88. "A global comparison of the life-cycle greenhouse gas emissions of combustion engine and electric passenger cars | International Council on Clean Transportation". theicct.org. Archived from the original on 9 November 2021. Retrieved 29 July 2021.
    89. Choma, Ernani F.; Evans, John S.; Hammitt, James K.; Gómez-Ibáñez, José A.; Spengler, John D. (1 November 2020). "Assessing the health impacts of electric vehicles through air pollution in the United States". Environment International. 144: 106015. doi: 10.1016/j.envint.2020.106015 . ISSN   0160-4120. PMID   32858467.
    90. Gössling, Stefan (3 July 2020). "Why cities need to take road space from cars – and how this could be done". Journal of Urban Design. 25 (4): 443–448. doi: 10.1080/13574809.2020.1727318 . ISSN   1357-4809.
    91. "e-bike carbon savings – how much and where? – CREDS". 18 May 2020. Archived from the original on 13 April 2021. Retrieved 13 April 2021.
    92. "Electric Cars Need Way Less Raw Materials Than ICE Vehicles". InsideEVs. Archived from the original on 28 July 2021. Retrieved 28 July 2021.
    93. 1 2 Agusdinata, Datu Buyung; Liu, Wenjuan; Eakin, Hallie; Romero, Hugo (27 November 2018). "Socio-environmental impacts of lithium mineral extraction: towards a research agenda". Environmental Research Letters. 13 (12): 123001. Bibcode:2018ERL....13l3001B. doi: 10.1088/1748-9326/aae9b1 . ISSN   1748-9326.
    94. Schöggl, Josef-Peter; Fritz, Morgane M.C.; Baumgartner, Rupert J. (September 2016). "Toward supply chain-wide sustainability assessment: a conceptual framework and an aggregation method to assess supply chain performance". Journal of Cleaner Production. 131: 822–835. doi:10.1016/j.jclepro.2016.04.035. ISSN   0959-6526.
    95. 1 2 "Electric car batteries need far less raw materials than fossil-fuel cars – study Archived 2 November 2021 at the Wayback Machine ". transportenvironment.org. Retrieved 1 November 2021.
    96. Mitchell G, Dorling D. An Environmental Justice Analysis of British Air Quality. Environment and Planning A: Economy and Space. 2003;35(5):909-929. doi:10.1068/a35240
    97. Barnes, Joanna H.; Chatterton, Tim J.; Longhurst, James W.S. (August 2019). "Emissions vs exposure: Increasing injustice from road traffic-related air pollution in the United Kingdom". Transportation Research Part D: Transport and Environment. 73: 56–66. doi:10.1016/j.trd.2019.05.012. S2CID   197455092.
    98. "Better Place" (PDF).{{cite web}}: CS1 maint: url-status (link)
    99. 1 2 "Transport: Electric vehicles". European Commission. Archived from the original on 19 March 2011. Retrieved 19 September 2009.
    100. "Nissan Adds 'Beautiful' Noise to Make Silent Electric Cars Safe". Bloomberg L.P. 18 September 2009. Retrieved 12 February 2010.
    101. "Our Electric Future – The American, A Magazine of Ideas". American.com. Archived from the original on 25 August 2014. Retrieved 26 December 2010.
    102. Nealer, Rachael; Reichmuth, David; Anair, Don (November 2015). "Cleaner Cars from Cradle to Grave: How Electric Cars Beat Gasoline Cars on Lifetime Global Warming Emissions" (PDF). Union of Concerned Scientists (UCS). Archived (PDF) from the original on 16 November 2015. Retrieved 22 November 2014.
    103. Sebastian Blanco (17 November 2015). "UCS: Well-to-wheel, EVs cleaner than pretty much all gas cars". Autoblog (website). Archived from the original on 21 November 2015. Retrieved 22 November 2015.
    104. Lepetit, Yoann (October 2017). "Electric vehicle life cycle analysis and raw material availability" (PDF). Transport & Environment. Archived (PDF) from the original on 23 February 2018. Retrieved 22 February 2018.
    105. "2020 European total cost of ownership for electric vehicles vs internal combustion engine vehicles | Nickel Institute". nickelinstitute.org. Archived from the original on 26 July 2021. Retrieved 26 July 2021.
    106. "Electric cars already cheapest option today for many consumers, new study finds | www.beuc.eu". www.beuc.eu. Archived from the original on 26 July 2021. Retrieved 26 July 2021.
    107. "Trends and developments in electric vehicle markets – Global EV Outlook 2021 – Analysis". IEA. Archived from the original on 26 July 2021. Retrieved 26 July 2021.
    108. "Explaining Electric & Plug-In Hybrid Electric Vehicles | US EPA". US EPA. US EPA. 17 August 2015. Archived from the original on 12 June 2018. Retrieved 8 June 2018.
    109. "Electric vehicle price is rising, but cost-per-mile is falling". Ars Technica. Archived from the original on 4 June 2018. Retrieved 8 June 2018.
    110. Lewis, Michelle (8 June 2021). "Meet the world's first electric autonomous container ship". Electrek. Archived from the original on 28 July 2021. Retrieved 28 July 2021.
    111. "Electric safari vehicles". Your African Safari. Retrieved 14 October 2022.
    112. Beedham, Matthew (3 February 2021). "What's a heat pump and why do EVs use them?". TNW | Shift. Archived from the original on 28 July 2021. Retrieved 28 July 2021.
    113. "Trams, energy saving, private cars, trolley buses, diesel buses | Claverton Group". Claverton-energy.com. 28 May 2009. Archived from the original on 19 September 2009. Retrieved 19 September 2009.
    114. "SUSTAINABLE LIGHT RAIL | Claverton Group". Claverton-energy.com. 21 November 2008. Archived from the original on 16 September 2009. Retrieved 19 September 2009.
    115. "Blackpool Trams – Then and Now • the seaside way to travel – with Live Blackpool". Blackpool. 9 September 2020. Archived from the original on 30 October 2020. Retrieved 26 November 2020.
    116. "EESL to procure 10,000 Electric Vehicles from TATA Motors". pib.nic.in. Archived from the original on 8 February 2018. Retrieved 7 February 2018.
    117. Balachandran, Manu. "As India revs up its grand electric vehicles plan, Tata and Mahindra are in the driver's seat". Quartz. Archived from the original on 8 February 2018. Retrieved 7 February 2018.
    118. "5 things to know about the future of electric vehicles". World Economic Forum. Archived from the original on 16 June 2021. Retrieved 7 June 2021.
    119. "Accelerating the Transition to Electric School Buses | U.S. PIRG Education Fund". uspirgedfund.org. Archived from the original on 29 July 2021. Retrieved 29 July 2021.
    120. Paolini, Massimo (20 April 2020). "Manifesto for the Reorganisation of the City after COVID19". Archived from the original on 11 May 2021. Retrieved 1 May 2021.
    121. Argemí, Anna (8 May 2020). "Por una Barcelona menos mercantilizada y más humana" (in Spanish). Archived from the original on 28 May 2021. Retrieved 11 May 2021.
    122. Maiztegui, Belén (18 June 2020). "Manifiesto por la reorganización de la ciudad tras el COVID-19" (in Spanish). Archived from the original on 2 June 2021. Retrieved 11 May 2021.
    123. 1 2 "2021–2022 EIB Climate Survey, part 2 of 3: Shopping for a new car? Most Europeans say they will opt for hybrid or electric". EIB.org. Retrieved 4 April 2022.
    124. Le Petit, Yoann. "Electric vehicle life cycle analysis and raw material availability" (PDF). transportenvironment.org. Transport & Environment. Archived (PDF) from the original on 4 April 2021. Retrieved 9 February 2021.
    125. 1 2 "Move to net zero 'inevitably means more mining'". BBC News. 24 May 2021. Archived from the original on 4 June 2021. Retrieved 4 June 2021.
    126. Månberger, André; Stenqvist, Björn (August 2018). "Global metal flows in the renewable energy transition: Exploring the effects of substitutes, technological mix and development". Energy Policy. 119: 226–241. doi:10.1016/j.enpol.2018.04.056. S2CID   52227957.
    127. Ali, Saleem (3 February 2020). "The Climate Footprint of Metal Mining". Springer Nature Sustainability Community. University of Delaware. Archived from the original on 10 February 2021. Retrieved 9 February 2021.
    128. Korosec, Kirsten. "Panasonic boosts energy density, trims cobalt in new 2170 battery cell for Tesla" Archived 29 August 2020 at the Wayback Machine , July 30, 2020
    129. "Daimler deepens CATL alliance to build long-range, fast-charging EV batteries" Archived 23 August 2020 at the Wayback Machine , Reuters, August 5, 2020; and "Porsche: The perfect cell" Archived 25 November 2020 at the Wayback Machine , Automotive World, August 28, 2020
    130. Patel, Prachi. "Ion Storage Systems Says Its Ceramic Electrolyte Could Be a Gamechanger for Solid-State Batteries" Archived 29 September 2020 at the Wayback Machine , IEEE.org, February 21, 2020
    131. Lambert, Fred. "Tesla researchers show path to next-gen battery cell with breakthrough energy density" Archived 24 August 2020 at the Wayback Machine , Electrek, August 12, 2020
    132. Horn, Michael; MacLeod, Jennifer; Liu, Meinan; Webb, Jeremy; Motta, Nunzio (March 2019). "Supercapacitors: A new source of power for electric cars?" (PDF). Economic Analysis and Policy. 61: 93–103. doi:10.1016/j.eap.2018.08.003. S2CID   187458469.
    133. "Calculating the total cost of ownership for electric trucks". Transport Dive. Retrieved 27 February 2021.
    134. "Electric trucking offers fleets ergonomic efficiency potential | Automotive World". www.automotiveworld.com. 11 January 2021. Retrieved 27 February 2021.
    135. Adler, Alan (8 March 2019). "2019 Work Truck Show: Adoption of Electrification Won't be Fast". Trucks.com. Retrieved 4 April 2019.
    136. Edelstein, Stephen (17 December 2020). "EV battery pack prices fell 13% in 2020, some are already below $100/kwh". Green Car Reports. Retrieved 13 June 2021. Electric-car battery-pack prices have fallen 13% in 2020, in some cases reaching a crucial milestone for affordability, according to an annual report released Wednesday by Bloomberg New Energy Finance. Average prices have dropped from $1,100 per kilowatt-hour to $137 per kwh, decrease of 89% over the past decade, according to the analysis. At this time last year, BNEF reported an average price of $156 per kwh—itself a 13% decrease from 2018. Battery-pack prices of less than $100 per kwh were also reported for the first time, albeit only for electric buses in China, according to BNEF. The $100-per-kwh threshold is often touted by analysts as the point where electric vehicles will achieve true affordability. Batteries also achieved $100 per kwh on a per-cell basis, while packs actually came in at $126 per kwh on a volume-weighted average, BNEF noted.
    137. Domonoske, Camila (17 March 2021). "From Amazon To FedEx, The Delivery Truck Is Going Electric". National Public Radio. Retrieved 13 June 2021. All major delivery companies are starting to replace their gas-powered fleets with electric or low-emission vehicles, a switch that companies say will boost their bottom lines, while also fighting climate change and urban pollution. UPS has placed an order for 10,000 electric delivery vehicles. Amazon is buying 100,000 from the start-up Rivian. DHL says zero-emission vehicles make up a fifth of its fleet, with more to come. And FedEx just pledged to replace 100% of its pickup and delivery fleet with battery-powered vehicles.
    138. Joselow, Maxine (11 January 2020). "Delivery Vehicles Increasingly Choke Cities with Pollution". Scientific American. Retrieved 13 June 2021. Electric vehicles, delivery drones and rules on when delivery trucks can operate are some solutions proposed in a new report. The report provides 24 recommendations for policymakers and the private sector, including mandating that delivery vehicles are electric. The report notes that if policymakers care about sustainability, they may want to impose aggressive new electric vehicle regulations.
    139. Gies, Erica (18 December 2017). "Electric Trucks Begin Reporting for Duty, Quietly and Without All the Fumes". Inside Climate News. Retrieved 13 June 2021. Replacing fleets of medium- and heavy-duty trucks can help cut greenhouse gas emissions and make cities quieter and cleaner. Because trucks need so much hauling power, they have eluded electrification until recently; a battery that could pull significant weight would itself be too hefty and too expensive. But now, improvements in battery technology are paying off, bringing down both size and cost. The number of hybrid-electric and electric trucks is set to grow almost 25 percent annually, from 1 percent of the market in 2017 to 7 percent in 2027, a jump from about 40,000 electric trucks worldwide this year to 371,000.
    140. Hyundai Porter/Porter II Electric: 9037. Kia Bongo EV: 5357. Domestically produced trucks sold in the country: 188222. mk.co.kr autoview.co.kr zdnet.co.kr
    141. 1 2 France-Presse, Agence (17 September 2018). "Germany launches world's first hydrogen-powered train". The Guardian. Archived from the original on 17 September 2018. Retrieved 29 November 2018.
    142. "L'Occitanie, première région à commander des trains à hydrogène à Alstom". France 3 Occitanie (in French). Archived from the original on 29 November 2018. Retrieved 29 November 2018.
    143. "La constructora Alstom quiere ir por el 'tramo ecológico' del Tren Maya". El Financiero (in Spanish). Archived from the original on 29 November 2018. Retrieved 29 November 2018.
    144. "SNCF : Pépy envisage la fin des trains diesel et l'arrivée de l'hydrogène en 2035". La Tribune (in French). Archived from the original on 29 November 2018. Retrieved 29 November 2018.
    145. "SNCF : Pépy envisage la fin des trains diesel et l'arrivée de l'hydrogène en 2035". La Tribune (in French). Archived from the original on 29 November 2018. Retrieved 29 November 2018.
    146. Barbecho Bautista, Pablo; Lemus Cárdenas, Leticia; Urquiza Aguiar, Luis; Aguilar Igartua, Mónica (2019). "A traffic-aware electric vehicle charging management system for smart cities". Vehicular Communications. 20: 100188. doi:10.1016/j.vehcom.2019.100188. hdl: 2117/172770 . S2CID   204080912.
    147. Fernandez Pallarés, Victor; Cebollada, Juan Carlos Guerri; Martínez, Alicia Roca (2019). "Interoperability network model for traffic forecast and full electric vehicles power supply management within the smart city". Ad Hoc Networks. 93: 101929. doi:10.1016/j.adhoc.2019.101929. S2CID   196184613.
    148. Liasi, Sahand Ghaseminejad; Golkar, Masoud Aliakbar (2017). "Electric vehicles connection to microgrid effects on peak demand with and without demand response". 2017 Iranian Conference on Electrical Engineering (ICEE). pp. 1272–1277. doi:10.1109/IranianCEE.2017.7985237. ISBN   978-1-5090-5963-8. S2CID   22071272.
    149. "First vehicle-to-grid demonstration". Archived from the original on 23 May 2011. Retrieved 24 March 2009.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
    150. Shafie-khah, Miadreza; Heydarian-Forushani, Ehsan; Osorio, Gerardo J.; Gil, Fabio A. S.; Aghaei, Jamshid; Barani, Mostafa; Catalao, Joao P. S. (November 2016). "Optimal Behavior of Electric Vehicle Parking Lots as Demand Response Aggregation Agents". IEEE Transactions on Smart Grid. 7 (6): 2654–2665. doi:10.1109/TSG.2015.2496796. ISSN   1949-3053. S2CID   715959.
    151. "Engines and Gas Turbines | Claverton Group". Claverton-energy.com. 18 November 2008. Archived from the original on 6 September 2009. Retrieved 19 September 2009.
    152. National Grid's use of Emergency. Diesel Standby Generator's in dealing with grid intermittency and variability. Potential Contribution in assisting renewables Archived 17 February 2010 at the Wayback Machine , David Andrews, Senior Technical Consultant, Biwater Energy, A talk originally given by as the Energy Manager at Wessex Water at an Open University Conference on Intermittency, 24 January 2006

    Further reading