MANUFACTURING METHOD OF LITHIUM NICKEL COBALT ALUMINIUM COMPOSITE OXIDE, LITHIUM NICKEL COBALT ALUMINIUM COMPOSITE OXIDE MADE BY THE SAME, LITHIUM SECONDARY BATTERY COMPRISING THE SAME

摘要

PURPOSE: A manufacturing method of a composite oxide of a lithium-nickel-cobalt-aluminum composite is provided to stably obtain the lithium-nickel-cobalt-aluminum composite with a particle diameter of 10-20 micron and tab density of 2.5-2.6 g/cc, using a spray drying method. CONSTITUTION: A manufacturing method of a composite oxide of a lithium-nickel-cobalt-aluminum composite comprises a step of mixing a nickel compound, cobalt compound, and aluminum compound in a solvent, by stoichiometry, and dispersing the mixture; a step of manufacturing slurry by wet drying the dispersed mixture to reach the average particle size of 0.3 micron or less; a step of spraying and drying the slurry; a step of mixing a lithium compound with the dry slurry; and a step of sintering the mixture. [Reference numerals] (AA) Example 1; (BB) Comparative example 1; (CC) Comparative example 2