| 摘要 |
A compound represented by chemical formula: HxLiyNiO2 (0<x≤1; 0≤y<1; and 0.25≤(x+y)≤2) is used as a positive active material of a lithium battery. The average oxidation number of nickel of the compound varies within a range of from 2.0 to 3.75 with charges and discharges of the battery. <IMAGE> |
