| 摘要 |
[Problem] To provide a means that can suppress elution of transition metals, particularly manganese, in a positive electrode active substance for a nonaqueous electrolyte secondary cell. [Solution] The present invention provides a positive electrode active substance for a nonaqueous electrolyte secondary cell that has the composition formula (1) Li 1.5[ Ni a Mn b Co c [Li] d [X] e ]O z (where X is at least one selected from Ti, Zr, and Nb, 0.01 ‰¤ e ‰¤ 0.7, a + b + c + d + e = 1.5, 0.1 ‰¤ d ‰¤ 0.4, 1.1 ‰¤ [a + b + c + e] ‰¤ 1.4, and z is the number of oxygen atoms that satisfies atomic valency), and that has a diffraction peak showing a halite-type layered structure at 20-23°, 35-40° (101), 42-45° (104), and 64-65 (108)/65-66 (110) in X-ray diffraction (XRD) determination. |
