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).
Optimization of Cobalt Doped Chromium Oxide as Cathode Material for Secondary Lithium Batteries
Sae Technical Papers
34th Intersociety Energy Conversion Engineering Conference ; 1999
1999-08-02
Aufsatz (Konferenz)
Englisch
Cobalt doped chromium oxides as cathode materials for secondary lithium batteries
Online Contents | 1999
|Li0.3MnO2-cathode material for secondary lithium batteries
Online Contents | 1999
|Li0.3MnO2--cathode material for secondary lithium batteries
Online Contents | 1999
|Surface treatment of LiNi0.8Co0.2O2 cathode material for lithium secondary batteries
Online Contents | 2002
|