| abstract |
(57) Abstract: An active material powder is composed of composite particles, and the composite particles are composed of base particles containing nickel hydroxide and a bismuth-containing compound covering the base particles. Or base particles containing nickel hydroxide, a coating inner layer of a bismuth-containing compound coating the base particles, and metal cobalt, cobalt monoxide, cobalt hydroxide, oxy, and the like coating the coating inner layer. Cobalt hydroxide, or metallic cobalt, cobalt monoxide, It comprises a coating outer layer made of a sodium-containing cobalt compound produced by adding an aqueous solution of sodium hydroxide to cobalt hydroxide or cobalt oxyhydroxide and performing heat treatment in the presence of oxygen. According to the present invention, there is provided a non-sintered nickel electrode for an alkaline storage battery having a high active material utilization rate and a good charge / discharge cycle characteristic even when charged at normal temperature as well as at normal temperature. |