| abstract |
Provided is a lithium metal composite oxide having a layered structure, which is particularly excellent as a positive electrode active material for batteries that are mounted on electric vehicles or hybrid vehicles. Proposed is a lithium metal composite oxide having a layered structure, which is represented by general formula Li 1+x (Mn α Co β Ni γ ) 1−x O 2 (0.00≦X≦0.07, 0.10≦α≦0.40, 0.10≦β≦0.40, and 0.30≦γ≦0.75) and has a specific surface area of more than 2.0 m 2 /g but 5.0 m 2 /g or less and has an average particle size of the primary particles/crystallite size ratio of 5.7 to 18.5. |