Ann Marie Sastry

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Ann Marie Sastry
Alma mater University of Delaware
Cornell University
Occupation(s)Engineer, educator, and businessperson
TitlePresident of Sakti3
Arthur F. Thurnau Professor of Mechanical, Biomedical and Materials Science and Engineering, University of Michigan

Ann Marie Sastry is an American engineer, educator, and businessperson. She was President of Sakti3, a solid-state battery company based in Ann Arbor, Michigan. [1] Sastry was the Arthur F. Thurnau Professor of Mechanical, Biomedical and Materials Science and Engineering at the University of Michigan from 1995 to 2012.

Contents

Biography

Sastry got her bachelor's degree in mechanical engineering from the University of Delaware as a Eugene I. DuPont Scholar. She later received a PhD degree in mechanical engineering from Cornell University. [2] She joined the University of Michigan as a faculty member in 1995. While at the University of Michigan, she founded and directed GM/UM Advanced Battery Coalition for Drivetrains and Energy Systems Engineering graduate program. [2]

Research

Sastry has worked in a variety of fields, [2] including composite materials, [3] percolation phenomena, [4] [5] diabetes, [6] and battery materials, [7] [8] [9] [10] design and optimization. [11] According to Google Scholar, as of 2022, her work has been cited over 11473 times. [12]

Sakti3

Sastry co-founded the solid-state battery company Sakti3 in 2008 as a spin-out of her university lab, with several of her students. [2] The Michigan Economic Development Council (MEDC) gave Sakti3 a no-strings grant of $3 million, in addition to other tax credit incentives issued directly through the State of Michigan, in the hopes it could develop a viable technology that could create permanent, Michigan-based jobs. [13] Sakti3 also received $1 million in funding from the federal government, administered through the Advanced Battery Consortium (USABC). [14] Sakti3 at one time claimed an intellectual property portfolio of 94 patents and patents pending. [15]

Sakti3 was acquired by Dyson in October 2015, with the expectation that Sakti's battery technology could help Dyson become an electric car manufacturer. [16] However, by April 2017, Dyson determined the patents had no utility and abandoned Sakti3's entire patent portfolio and cancelled its licensing agreement. Eight months after Dyson announced that they had relinquished Sakti3's core battery patents, Sastry departed Dyson amid doubts in the field regarding her claim that she was on the verge of commercializing much-sought-after solid state battery technology. [17] In October 2019, Dyson announced that it had scrapped its electric car project altogether. [18]

There is no record that any government entity received any material benefit from their investment despite Sastry receiving a significant personal windfall from the sale to Dyson. [19] Former employees (who were not on staff at Sakti3 at the time of the Dyson acquisition) have criticized the company. Fabio Albano, Marc Langlois, and Steve Buckingham claimed that the company's early patents and methods were useless and that Sakti3 was using an unscalable stacked cell configuration. [19] The only independently verified data on Sakti3's prototypes by the United States Department of Energy show a capacity of 2.4 mAh, only capable of powering very small devices. [20] Steve Buckingham, a former employee, has publicly expressed his disappointment with the small area (one square cm) of the best cell produced. Bob Kruse, formerly GMs most senior electric vehicle executive, stayed on as COO for less than 2 years. [19]

Awards and honors

Sastry has won multiple awards and honors including 1997 NSF PECASE Award (Presidential Early Career Award for Scientists and Engineers), [21] Gustus L. Larson Memorial Award of the ASME in 2007 [2] and Frank Kreith Award of the ASME in 2011. [22] She was named an ASME fellow in 2004. [23]

Related Research Articles

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A lithium-ion or Li-ion battery is a type of rechargeable battery that uses the reversible intercalation of Li+ ions into electronically conducting solids to store energy. In comparison with other commercial rechargeable batteries, Li-ion batteries are characterized by higher specific energy, higher energy density, higher energy efficiency, a longer cycle life, and a longer calendar life. Also noteworthy is a dramatic improvement in lithium-ion battery properties after their market introduction in 1991: within the next 30 years, their volumetric energy density increased threefold while their cost dropped tenfold.

<span class="mw-page-title-main">Vanadium redox battery</span> Type of rechargeable flow battery

The vanadium redox battery (VRB), also known as the vanadium flow battery (VFB) or vanadium redox flow battery (VRFB), is a type of rechargeable flow battery. It employs vanadium ions as charge carriers. The battery uses vanadium's ability to exist in a solution in four different oxidation states to make a battery with a single electroactive element instead of two. For several reasons, including their relative bulkiness, vanadium batteries are typically used for grid energy storage, i.e., attached to power plants/electrical grids.

<span class="mw-page-title-main">Flow battery</span> Type of electrochemical cell

A flow battery, or redox flow battery, is a type of electrochemical cell where chemical energy is provided by two chemical components dissolved in liquids that are pumped through the system on separate sides of a membrane. Ion transfer inside the cell occurs through the membrane while both liquids circulate in their own respective space. Cell voltage is chemically determined by the Nernst equation and ranges, in practical applications, from 1.0 to 2.43 volts. The energy capacity is a function of the electrolyte volume and the power is a function of the surface area of the electrodes.

<span class="mw-page-title-main">Lithium iron phosphate</span> Chemical compound

Lithium iron phosphate or lithium ferro-phosphate (LFP) is an inorganic compound with the formula LiFePO
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The lithium–air battery (Li–air) is a metal–air electrochemical cell or battery chemistry that uses oxidation of lithium at the anode and reduction of oxygen at the cathode to induce a current flow.

A metal–air electrochemical cell is an electrochemical cell that uses an anode made from pure metal and an external cathode of ambient air, typically with an aqueous or aprotic electrolyte.

A lithium ion manganese oxide battery (LMO) is a lithium-ion cell that uses manganese dioxide, MnO
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Lithium–silicon batteries are lithium-ion battery that employ a silicon-based anode and lithium ions as the charge carriers. Silicon based materials generally have a much larger specific capacity, for example 3600 mAh/g for pristine silicon, relative to the standard anode material graphite, which is limited to a maximum theoretical capacity of 372 mAh/g for the fully lithiated state LiC6.

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Sakti3, a wholly owned subsidiary of Dyson Ltd., is a solid-state battery company based in Ann Arbor, Michigan. Dyson once stated that it was “committed to investing £1B in battery technology over the coming years, and Sakti3 is an essential and exciting part of that program.” However, Dyson later wrote off much of its investment in Sakti3, indicating that it could no longer be valued at the $93 million price that Dyson had paid. Dyson eventually also cancelled its plans to develop an electric vehicle.

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<span class="mw-page-title-main">Solid dispersion redox flow battery</span>

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Scanning vibrating electrode technique (SVET), also known as vibrating probe within the field of biology, is a scanning probe microscopy (SPM) technique which visualizes electrochemical processes at a sample. It was originally introduced in 1974 by Jaffe and Nuccitelli to investigate the electrical current densities near living cells. Starting in the 1980s Hugh Isaacs began to apply SVET to a number of different corrosion studies. SVET measures local current density distributions in the solution above the sample of interest, to map electrochemical processes in situ as they occur. It utilizes a probe, vibrating perpendicular to the sample of interest, to enhance the measured signal. It is related to scanning ion-selective electrode technique (SIET), which can be used with SVET in corrosion studies, and scanning reference electrode technique (SRET), which is a precursor to SVET.

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References

  1. ↑ LeVine, Steve (December 15, 2017). "Battery exec leaves Dyson two years after $90 million buyout". Axios.com .
  2. 1 2 3 4 5 Desmond, Kevin (2016). Innovators in battery technology : profiles of 93 influential electrochemists. McFarland & Company. ISBN   9780786499335.[ permanent dead link ]
  3. ↑ Berhan, L.; Sastry, A. M. (April 30, 2007). "Modeling percolation in high-aspect-ratio fiber systems. I. Soft-core versus hard-core models". Physical Review E. 75 (4): 041120. Bibcode:2007PhRvE..75d1120B. doi:10.1103/PhysRevE.75.041120. PMID   17500878. S2CID   6380421.
  4. ↑ Berhan, L.; Sastry, A. M. (April 30, 2007). "Modeling percolation in high-aspect-ratio fiber systems. II. The effect of waviness on the percolation onset". Physical Review E. 75 (4): 041121. Bibcode:2007PhRvE..75d1121B. doi:10.1103/PhysRevE.75.041121. PMID   17500879. S2CID   13999078.
  5. ↑ Yi, Y.-B.; Sastry, A. M. (August 8, 2004). "Analytical approximation of the percolation threshold for overlapping ellipsoids of revolution". Proceedings of the Royal Society of London A: Mathematical, Physical and Engineering Sciences. 460 (2048): 2353–2380. Bibcode:2004RSPSA.460.2353Y. doi:10.1098/rspa.2004.1279. ISSN   1364-5021. S2CID   2475482.
  6. ↑ Vincent, Andrea M.; Perrone, Lorena; Sullivan, Kelli A.; Backus, Carey; Sastry, Ann Marie; Lastoskie, Christian; Feldman, Eva L. (February 1, 2007). "Receptor for Advanced Glycation End Products Activation Injures Primary Sensory Neurons via Oxidative Stress". Endocrinology. 148 (2): 548–558. doi: 10.1210/en.2006-0073 . ISSN   0013-7227. PMID   17095586.
  7. ↑ Zhang, Xiangchun; Shyy, Wei; Sastry, Ann Marie (October 1, 2007). "Numerical Simulation of Intercalation-Induced Stress in Li-Ion Battery Electrode Particles". Journal of the Electrochemical Society. 154 (10): A910–A916. Bibcode:2007JElS..154A.910Z. doi:10.1149/1.2759840. ISSN   0013-4651. S2CID   15540771.
  8. ↑ Wang, Chia-Wei; Sastry, Ann Marie (November 1, 2007). "Mesoscale Modeling of a Li-Ion Polymer Cell". Journal of the Electrochemical Society. 154 (11): A1035–A1047. Bibcode:2007JElS..154A1035W. doi:10.1149/1.2778285. ISSN   0013-4651. S2CID   10130595.
  9. ↑ Kim, Hyon C; Sastry, Ann M (November 1, 2012). "Effects of carbon fiber electrode deformation in multifunctional structural lithium ion batteries". Journal of Intelligent Material Systems and Structures. 23 (16): 1787–1797. doi:10.1177/1045389X12449914. ISSN   1045-389X. S2CID   108505799.
  10. ↑ Chung, M. D.; Seo, J. H.; Zhang, X. C.; Sastry, A. M. (April 1, 2011). "Implementing Realistic Geometry and Measured Diffusion Coefficients into Single Particle Electrode Modeling Based on Experiments with Single LiMn2O4 Spinel Particles". Journal of the Electrochemical Society. 158 (4): A371–A378. CiteSeerX   10.1.1.686.6838 . doi:10.1149/1.3549161. ISSN   0013-4651.
  11. ↑ Chen, Y. -H.; Wang, C. -W.; Zhang, X.; Sastry, A. M. (May 1, 2010). "Porous cathode optimization for lithium cells: Ionic and electronic conductivity, capacity, and selection of materials". Journal of Power Sources. 195 (9): 2851–2862. Bibcode:2010JPS...195.2851C. doi:10.1016/j.jpowsour.2009.11.044.
  12. ↑ "Ann Marie Sastry - Google Scholar Citations". scholar.google.com. Retrieved August 3, 2017.
  13. ↑ "Sakti3 Raises $7 Million in Series B Financing". www.businesswire.com. April 1, 2010. Retrieved November 27, 2020.
  14. ↑ LeVine, Steve (October 21, 2015). "Sakti3's quest for a better battery: Hype, funding, promises, and then a surprise sale". Quartz. Retrieved November 27, 2020.
  15. ↑ Charlton, Alistair (April 3, 2017). "Out with the old, in with the new: Dyson drops old battery patents in solid state cell push". International Business Times UK. Retrieved August 3, 2017.
  16. ↑ "Dyson acquires Sakti3 for $90M to help commercialize 'breakthrough' solid-state battery tech". VentureBeat. October 19, 2015. Retrieved November 27, 2020.
  17. ↑ LeVine, Steve (December 15, 2017). "Battery exec leaves Dyson two years after $90 million buyout". Axios. Retrieved November 27, 2020.
  18. ↑ "Dyson has scrapped its electric car project". BBC News. October 11, 2019. Retrieved November 27, 2020.
  19. 1 2 3 LeVine, Steve (October 21, 2015). "Sakti3's quest for a better battery: Hype, funding, promises, and then a surprise sale". Quartz. Retrieved June 24, 2021.
  20. ↑ Walker, L.; Robertson, D.; Basco, J.; Prezas, P.; Bloom, I. "Electrochemical Performance Testing" (PDF). Argonne National Laboratory. Retrieved July 20, 2021.
  21. ↑ "The Presidential Early Career Award for Scientists and Engineers: Recipient Search Results | NSF – National Science Foundation". www.nsf.gov. Retrieved August 3, 2017.
  22. ↑ "Frank Kreith Award of the ASME" . Retrieved August 3, 2017.
  23. ↑ "ASME Fellows" (PDF). Retrieved August 3, 2017.
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