| 摘要 |
PROBLEM TO BE SOLVED: To provide a positive electrode material, a nonaqueous electrolyte secondary battery positive electrode and a nonaqueous electrolyte secondary battery, in which a crystal structure is suppressed from being collapsed during charge/discharge and which are excellent in safety.SOLUTION: A positive electrode material of the present invention is a composite oxide which is obtained by forming a solid solution of LiNiMMMnO(where, 0.50≤α≤1.35, 0≤β<1.0, 0≤γ≤0.66, 0.33≤β+γ≤1.1, 0≤ν≤0.66 and 0≤ε≤1.00 are satisfied, Mrepresents at least one selected from Sn and SbAl, and Mrepresents at least one selected from Sb) and LiSnO. In a nonaqueous electrolyte secondary battery positive electrode 14 and a nonaqueous electrolyte secondary battery 1 of the present invention, the positive electrode material is used.SELECTED DRAWING: None |
