| abstract |
[PROBLEMS] To provide a method for producing a positive electrode active material for a lithium secondary battery excellent in initial capacity, initial charge / discharge efficiency, charge / discharge cycle durability, safety, and the like. SOLUTION: Li p Ni x Co y Mn z Or (0.9 ≦ p ≦ 1.3, 0.2 ≦ x <0.5, 0.20 <y <0. 40, 0.2 ≦ z ≦ 0.5, 0.8 ≦ x + y + z ≦ 1, A 1 ≦ r ≦ 2) in a process for producing a positive active material for a lithium secondary battery represented, has the formula, a Ni x Co y Mn z O r , And a mixture of a composite oxide having a specific surface area of 10 to 150 m 2 / g and a lithium compound in an oxygen-containing atmosphere. Bake at 00-1000 ° C. |