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Wide Operating Temperature Range Electrolytes for High Voltage and High Specific Energy Li-ion Cells

Show simple item record Smart, M. C. Hwang, C. Krause, F. C. Soler, J. West, W. C. Ratnakumar, B. V. Amine, K. 2015-03-04T22:55:30Z 2015-03-04T22:55:30Z 2012-10-07
dc.identifier.citation 222th Meeting of the Electrochemical Society (ECS), Honolulu, Hawaii, October 7-12, 2012 en_US
dc.identifier.clearanceno 13-1423
dc.description.abstract A number of electrolyte formulations that have been designed to operate over a wide temperature range have been investigated in conjunction with layered-layered metal oxide cathode materials developed at Argonne. In this study, we have evaluated a number of electrolytes in Li-ion cells consisting of Conoco Phillips A12 graphite anodes and Toda HE5050 Li1.2Ni0.15Co0.10Mn0.55O2 cathodes. The electrolytes studied consisted of LiPF6 in carbonate-based electrolytes that contain ester co-solvents with various solid electrolyte interphase (SEI) promoting additives, many of which have been demonstrated to perform well in 4V systems. More specifically, we have investigated the performance of a number of methyl butyrate (MB) containing electrolytes (i.e., LiPF6 in ethylene carbonate (EC) + ethyl methyl carbonate (EMC) + MB (20:20:60 v/v %) that contain various additives, including vinylene carbonate, lithium oxalate, and lithium bis(oxalato)borate (LiBOB). When these systems were evaluated at various rates at low temperatures, the methyl butyrate-based electrolytes resulted in improved rate capability compared to cells with all carbonate-based formulations. It was also ascertained that the slow cathode kinetics govern the generally poor rate capability at low temperature in contrast to traditionally used LiNi0.80Co0.15Al0.05O2-based systems, rather than being influenced strongly by the electrolyte type. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2012 en_US
dc.subject Li-ion Battery en_US
dc.title Wide Operating Temperature Range Electrolytes for High Voltage and High Specific Energy Li-ion Cells en_US
dc.title.alternative Wide operating temperature range electrolytes for high voltage and high specific energy Li-Ion cells en_US
dc.type Preprint en_US

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