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AC alternating current AFM atomic force microscopy ANL Argonne National Laboratory ASI area-specific impedance (ohm-cm 2) ATD Advanced Technology Development ATR attenuated total reflection BNL Brookhaven National Laboratory BSF battery scaling factor CSAFM current-sensing atomic force microscopy CE capillary electrophoresis CF capacity fade DEC diethyl carbonate DEDOHC diethyl-2,5-dioxahexane carboxylate DMC dimethyl carbonate DMDOHC dimethyl-2,5-dioxahexane carboxylate DME dimethoxy ethane DMF dimethyl formamide DOE U.S. Department of Energy EC ethylene carbonate EDX energy dispersive X-ray analysis EELS electron energy loss spectroscopy EMC ethyl methyl carbonate EMDOHC ethyl methyl-2,5-dioxahexane carboxylate EOC end of charge EOL end of life EXAFS extended X-ray absorption fine structure EY electron yield FFT fast Fourier transform FID flame ionization detector FTIR Fourier transform infrared FY fluorescence yield GC gas chromatography GC-MS gas chromatography mass spectrometry GPC gel permeation chromatography Gen 1 (+) LiNi 0.8 Co 0.2 O 2 cathode Gen 1 (-) MCMB:SFG-6 (82:18) Gen 1 electrolyte 1.2 M LiPF 6 EC:DEC (1:1 by wt) Gen 2 cells ATD Generation 2 baseline cells Gen 2 (+) LiNi 0.8 Co 0.15 Al 0.05 O 2 cathode Gen 2 (-) MAG-10 synthetic graphite anode Gen 2 electrolyte 1.2 M LiPF 6 EC:EMC (3:7 by wt) HEV hybrid electric vehicle HF hydrogen fluoride (hydrofluoric acid) DIAGNOSTIC EXAMINATION OF GENERATION 2 LITHIUM-ION CELLS AND ASSESSMENT OF PERFORMANCE DEGRADATION MECHANISMS