| abstract |
[PROBLEMS] To provide a positive electrode active material for a lithium secondary battery capable of achieving both high capacity, improved load characteristics such as rate / output characteristics, good cycle characteristics, low cost, high voltage resistance and high safety. I will provide a. A lithium compound, one or more transition metal compounds containing Mn, Ni, and Co, and an additive that suppresses grain growth and sintering during firing are pulverized in a liquid medium. A lithium-containing product obtained by a production method including at least a slurry preparation step for obtaining a uniformly dispersed slurry, a spray-drying step for spray-drying the obtained slurry, and a firing step for firing the obtained spray-dried powder. Cathode active material for lithium secondary battery obtained by mixing transition metal compound powder A and lithium-containing transition metal composite oxide powder B having a layered structure and containing Li and Ni and Co as transition metals . [Selection] Figure 1 |