| abstract |
(57) [Abstract] [Problem] Charge-discharge cycle characteristics of a non-aqueous electrolyte secondary battery, Improve high temperature storage performance. As a positive electrode active material, a general formula LiNixCo is used. yMzO 2 (M is at least one element of Cr, V, Fe, and Mn), and the sum n of the values of x, y, and z is 0. Nx is 0.6 to 0.9, n in the range of 95 to 1.05 y is in the range of 0.1 to 0.25. |