Optimization of Cobalt Doped Chromium Oxide as Cathode Material for Secondary Lithium Batteries

Paper #:
  • 1999-01-2687

Published:
  • 1999-08-02
Citation:
Zhang, D., Popov, B., and White, R., "Optimization of Cobalt Doped Chromium Oxide as Cathode Material for Secondary Lithium Batteries," SAE Technical Paper 1999-01-2687, 1999, https://doi.org/10.4271/1999-01-2687.
Pages:
8
Abstract:
Cobalt doped chromium oxides were synthesized and characterized as cathode materials for secondary lithium batteries. A small amount of Co as dopant in the chromium oxides provides greater stability to the structure of CrOx and helps in improving the high-rate behavior of these oxides. Optimized Co0.2CrOx exhibited an initial capacity of 290 mAh/g with an average discharge voltage of 3.0 V vs. Li/Li+. The lithiated Co0.2CrOx exhibited an initial capacity of 230 mAh/g. Both lithiated and non-lithated Co0.2CrOx were found to be reversible in the entire intercalation range (2.0 – 4.2 V vs. Li/Li+). Compared with pure CrOx, Co doped CrOx is characterized by better high-rate behavior. (> 85% capacity for Co0.2CrOx and > 75% capacity for LiCo0.2CrOx at 0.65 C discharge rate).
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