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The Effect of Electrolyte Additives upon the Lithium Kinetics of Li-Ion Cells Containing MCMB and LiNi(x)Co(1-x)O2 Electrodes and Exposed to High TemperaturesWith the intent of improving the performance of lithium-ion cells at high temperatures, we have investigated the use of a number of electrolyte additives in experimental MCMB- Li(x)Ni(y)Co(1-y)O2 cells, which were exposed to temperatures as high as 80 C. In the present work, we have evaluated the use of a number of additives, namely vinylene carbonate (VC), dimethyl acetamide (DMAc), and mono-fluoroethylene carbonate (FEC), in an electrolyte solution anticipated to perform well at warm temperature (i.e., 1.0M LiPF6 in EC+EMC (50:50 v/v %). In addition, we have explored the use of novel electrolyte additives, namely lithium oxalate and lithium tetraborate. In addition to determining the capacity and power losses at various temperatures sustained as a result of high temperature cycling (cycling performed at 60 and 80 C), the three-electrode MCMB-Li(x)Ni(y)Co(1-y)O2 cells (lithium reference) enabled us to study the impact of high temperature storage upon the solid electrolyte interphase (SEI) film characteristics on carbon anodes (MCMB-based materials), metal oxide cathodes, and the subsequent impact upon electrode kinetics.
Document ID
20150009157
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Smart, M. C.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Ratnakumar, B. V.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Gozdz, A. S.
(A123 Systems, Inc. Watertown, MA, United States)
Mani, S.
(A123 Systems, Inc. Ann Arbor, MI, United States)
Date Acquired
June 1, 2015
Publication Date
October 4, 2009
Subject Category
Chemistry And Materials (General)
Meeting Information
Meeting: Meeting of the Electrochemical Society
Location: Vienna
Country: Austria
Start Date: October 4, 2009
End Date: October 9, 2009
Sponsors: Electrochemical Society, Inc.
Distribution Limits
Public
Copyright
Other
Keywords
High Temperture Resilience

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