NICKEL LITHIUM METAL COMPOSITE OXIDE PRODUCTION METHOD, NICKEL LITHIUM METAL COMPOSITE OXIDE OBTAINED BY PRODUCTION METHOD, AND CATHODE ACTIVE MATERIAL INCLUDING SAME

摘要

[Task] Performance improvement and cost reduction in a positive electrode active material for a lithium ion battery. [Means for Resolution] A method of manufacturing a lithium nickel composite oxide including the following Steps 1 to 7: (Step 1) a dissolving step; (Step 2) a precipitation step; (Step 3) a filtering step; (Step 4) a drying step; (Step 5) a mixing step of mixing aluminum hydroxide and lithium carbonate with the precursor powder, which is obtained in Step 4, to obtain a mixture; (Step 6) a high-temperature firing step of firing the mixture, which is obtained in Step 5, at a high temperature of higher than 790°C to obtain a fired product; and (Step 7) a low-temperature firing step of firing the fired product, which has undergone Step 6, at a low temperature of lower than 790°C.