HIGH-RATE LITHIUM COBALTATE POSITIVE ELECTRODE MATERIAL AND METHOD FOR PREPARATION THEREOF

A high rate lithium cobalt oxide positive electrode material, comprising a multichannel mesh structure formed using a fast ion conductor Li ± M' ³ O ² . The structure primarily consists of lithium cobalt oxide. The lithium cobalt oxide is provided as a primary granular form, and is then melt-blended with the fast ion conductor Li ± M' ³ O ² to form a secondary granule. The lithium cobalt oxide is embedded within the multichannel mesh structure formed by the fast ion conductor Li ± M' ³ O ² . For the Li ± M' ³ O ² , M' is one or more of the following: Ti, Zr, Y, V, Nb, Mo, Sn, In, La, and W; and 1 ‰¤ ± ‰¤ 4, 1 ‰¤ ³ ‰¤ 5, and 2 ‰¤ ² ‰¤ 12. The lithium cobalt oxide positive electrode material is primarily prepared by homogeneously mixing a lithium source with a cobalt oxide impregnated with a hydroxide of M', then placing the mixture in an air atmosphere furnace for high temperature reaction sintering to obtain the final product. The product provided by the invention significantly improves lithium ion conductivity in a lithium cobalt oxide positive electrode material of a lithium-ion battery during charging or discharging, thereby improving a rate performance of the material.