METHOD FOR PRODUCING POSITIVE MATERIAL FOR LITHIUM SECONDARY BATTERY

The present invention relates to a method for producing a positive electrode active material, the method including washing a lithium transition metal oxide with a washing solution, and solid-phase mixing the washed lithium transition metal oxide and a metal phosphate compound having a melting point of 500°C or lower, followed by performing heat treatment to form a coating layer on the surface of the lithium transition metal oxide.