The investigation of surface reactions of electrolytes with the electrodes of Lithium Ion Batteries (LIB) for Electric Vehicle (EV) applications will be presented.  The effect of electrolyte modification on electrochemical cycling performance and electrode surface film structure will be presented.  Electrode surface analysis is conducted via a combination of microscopy and spectroscopy, including SEM, TEM, XPS, FT=IR, and NMR spectroscopy.   The mechanism of formation of the anode Solid Electrolyte Interphase (SEI) on graphite, silicon, and tin will be presented along with the effect of electrolyte additives on SEI structure and performance.  The use of cathode film forming electrolyte additives which improve the performance of graphite /LiNi0.5Mn1.5O4 cells cycled to high voltage (4.8 V) will also be discussed.

Advances in electrolytes for lithium ion batteries: A mechanistic understanding

248th National Meeting (2014)

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