| 摘要 |
A non-aqueous electrolyte secondary cell having a positive electrode comprising particles of a lithium-containing layered nickel oxide represented by a general formula: LiaNixCoyAlzMbO2, wherein 0.3 <= a <= 1.05, 0.7 <= x <= 0.87, 0.1 <= y <= 0.27, 0.03 <= z <= 0.1, 0 <= b <= 0.1, M is at least one selected from among the metal elements except Ni, Co and Al, and in a bond energy of the oxygen 1s spectrum in the XPS measurement of the particle, there exists the combination of L1 and L2 satisfying (alphaL2-alphaL1)/alphaL2 <= 0.1, L1 <= 100, and L2 >= 500, wherein D is the area of the peak appearing at 529 eV and E is the area of the peak appearing at 531 eV, an oxygen concentration ratio is D/(D+E), and alphaL1 and alphaL2 are the oxygen concentration ratios at the depths from the surface of the particle of L1 nm and L2 nm. |
