| 摘要 |
A positive electrode active material provided by the present invention is formed of a lithium-nickel-containing metal phosphate compound represented by a general formula: LiNi (1-x) M x PO 4 (1) (in Formula (1), M is one or more metal elements selected from divalent and trivalent metal elements, and x is a number satisfying the condition 0 < x < 0.5). At least part of a surface of the lithium-nickel-containing metal phosphate compound is covered with carbon, and the lithium-nickel-containing metal phosphate compound covered with carbon has an olivine-type crystal structure confirmed by structure analysis by X-ray diffraction. |
