SINTERED TYPE POSITIVE ELECTRODE PLATE FOR NICKEL- HYDROGEN BATTERY, ITS MANUFACTURE AND NICKEL-HYDROGEN BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a sintered type positive electrode plate for a nickel- hydrogen battery that does not cause abnormal deposition of a nickel hydroxide due to moisture absorption during storage and does not need restriction in relation to a storage environment and a storage period and provide a nickel- hydrogen battery provided with the positive electrode plate. SOLUTION: By using a porous substrate formed of a nickel sintered body including a core material made of a nickel plated steel plate, and an active material filled in the porous substrate and containing, as a main constituent, a nickel hydroxide containing at least one kind of compound selected from a group comprising zirconium, lanthanum and scandium as an additive, abnormal deposition of the nickel hydroxide is prevented by its pH buffering action. In this case, the weight of at least one kind of additive selected from the group comprising zirconium, lanthanum and scandium is set to 0.1-10 wt.% with respect to the weight of the active material.