| abstract |
The present invention discloses a lithium-cobalt metal oxide powder, wherein the lithium-cobalt metal oxide powder has a coating structure, contains a lithium-cobalt metal oxide matrix, and further contains a Co 3 O 4 coating layer. The general formula of the lithium-cobalt metal oxide powder is Li a Co 1-x-y M x N y O 2 · rCo 3 O 4 (in the formula, 0.002 <r ≦ 0.05, 1 ≦ a ≦ 1). .1, 0 <x ≦ 0.02, 0 ≦ y ≦ 0.005, and a <1 + 3r, where M is a doping element and N is a coating element). The present invention further provides a method for preparing the above-mentioned lithium-cobalt metal oxide powder and a method for measuring the Co 3 O 4 content therein. The material prepared in the present invention has excellent electrochemical performance. |