Doped cobalt trioxide, method for preparing same, and lithium cobalt oxide cathode material

Abstract

The application discloses doped tricobalt tetraoxide, a preparation method thereof and a lithium cobaltate positive electrode material, and relates to the technical field of battery materials. The preparation method of the doped tricobalt tetraoxide adopts a sintering furnace to sinter doped cobalt carbonate, the sintering temperature and time of each temperature zone are controlled, the prepared doped tricobalt tetraoxide has good structural stability, the spherical particles have no cracking or breaking phenomenon, local structure collapse under high-voltage operation can be prevented, and the development demand of high-voltage lithium cobaltate can be met. Compared with the existing sintering process of two sintering furnaces, the short-range calcination process of the doped cobalt carbonate has the advantages of high production efficiency, low production cost and easy industrialization.

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