| 摘要 |
Disclosed is a cathode active material and a method to produce the same a t low cost. The cathode powder comprises modified LiCoO2, and possibly a sec ond phase which is LiM'O2 where M' is Mn, Ni, Co with a stoichiometric ratio Ni: Mn >=1. The modified LiCoO2 is Ni and Mn bearing and has regions of low and high manganese content, where regions with high manganese content ar e located in islands on the surface. The cathode material has high cycling s tability, a very high rate performance and good high temperature storage pro perties. |
