METHOD FOR PRODUCING POSITIVE ELECTRODE MATERIAL FOR SECONDARY BATTERY

摘要

A method for producing a cathode material for a secondary battery is provided to improve the tap density of a cathode active material, and to impart improved charge/discharge characteristics to a battery. The method for producing a cathode material for a lithium ion secondary battery comprises the steps of: mixing and heat treating(S100) a Ni source, Co source and Mn source to provide a NiCoMn oxide; adding(S110) a Li source to the NiCoMn oxide in a desired molar ratio, followed by mixing; and further heat treating(S120) the resultant mixture to provide Li(Ni_1/3Co_1/3Mn_1/3)O_2 as a cathode active material. The heat treating step is carried out at 450 deg.C for 1 hour, and then at 950 deg.C for 4 hours.