Capacity Fade Studies of LiCoO 2 Based Li-ion Cells Cycled at Different Temperatures. Bala S. Haran, P.Ramadass, Ralph E. White and Branko N. Popov Center for Electrochemical Engineering Department of Chemical Engineering, University of South Carolina Columbia, SC 29208. Objectives.
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Capacity Fade Studies of LiCoO2 Based Li-ion Cells Cycled at Different Temperatures
Bala S. Haran, P.Ramadass,
Ralph E. Whiteand Branko N. Popov
Center for Electrochemical Engineering
Department of Chemical Engineering,
University of South Carolina Columbia, SC 29208
Mass of the electrode material (g)
Geometric area (both sides) (cm2)
Loading on one side (mg/cm2)
Total Thickness of the Electrode (m)
Specific Capacity (mAh/g)
45 deg C
55 deg C
Decrease in c/a ratio leads to decrease in Li stoichiometry*
*G. Ting-Kuo Fey et al., Electrochemistry Comm. 3 (2001) 234
Loss of Li
(Primary Active Material)
Degradation of C, LiCoO2
(Secondary Active Material)
This work was carried out under a contract with Mr. Joe Stockel, National Reconnaissance Office
Hybrid Advanced Power Sources # NRO-00-C-1034.