LITHIUM COBALT METAL OXIDE POWDER, METHOD FOR MAKING THE SAME, AND METHOD FOR DETERMINING CONTENT OF COBALT (II,III) OXIDE

摘要

A lithium cobalt metal oxide powder is disclosed in the present disclosure. The lithium cobalt metal oxide powder has a coating structure. The lithium cobalt metal oxide powder includes a lithium cobalt metal oxide matrix. The lithium cobalt metal oxide powder further includes a Co₃O₄ coating layer. A general formula of the lithium cobalt metal oxide powder is Li_aCo_1-x-yM_xN_yO₂.rCo₃O₄, wherein 0.002r; M is a doping element; and N is a coating element. A method for making the lithium cobalt metal oxide powder as described above and a method for determining a content of Co₃O₄ therein are further provided. The material made in the present disclosure has an excellent electrochemical performance.