| abstract |
A positive electrode material for a lithium secondary battery having a large capacity and high safety is provided. Compositional formula Li 1.1 + x Ni a M 1 b M 2 c O 2 (wherein M 1 is Co or Co and Mn, and M 2 is Mo, W or Nb. −0 .07 ≦ x ≦ 0.1, 0.6 ≦ a ≦ 0.9, 0.05 ≦ b ≦ 0.38, 0.02 ≦ c ≦ 0.06)) Among them, two or more kinds having different compositions are mixed and used. [Selection] Figure 1 |