| 摘要 |
PROBLEM TO BE SOLVED: To increase the number of reaction electrons of a positive electrode active material and to increase the discharge capacity per volume of a positive electrode material.SOLUTION: A positive electrode material for an alkaline storage battery contains nickel hydroxide. In the crystallite of the nickel hydroxide, Zn and an A element that is at least one element selected from the group consisting of Al, Ga, Mn, and Mo are solid-solved. When [A] represents the molarity of the A element, [Ni] represents the molarity of nickel, and [Zn] represents the molarity of zinc in the positive electrode material, [A]/([Ni]+[A]+[Zn]) is 5 to 16%, and [Zn]/([Ni]+[A]+[Zn]) is 1 to 10%. The nickel hydroxide includes α phase nickel hydroxide and &bgr; phase nickel hydroxide. Accordingly, the number of reaction electrons is large, and the capacity per volume of the positive electrode materials is large. |
