| 摘要 |
PROBLEM TO BE SOLVED: To provide a nickel-hydrogen storage battery with its positive electrode formed of paste nickel and a negative electrode of paste alloy, assuring a suppressed voltage drop at high-temperature storage, a large recovery rate of capacity after high-temperature storage, improved high-temperature storing characteristics, and excellent low-temperature discharging characteristics and high-rate discharging characteristics. SOLUTION: The nickel-hydrogen storage battery is composed of a positive electrode formed from paste-form nickel of such a structure that an electroconducting assistant consisting of metal cobalt or cobalt compound is dispersed in a binder together with nickel hydroxide, a negative electrode formed from a paste-form alloy in which a hydrogen storage alloy is dispersed in a binder, a separator interposed between the two electrodes, and an electrolytic solution consisting of alkaline aqueous solution, wherein the negative electrode contains 0.5-5 pts. by wt. Co3O4 with respect to 100 pts. by wt. hydrogen storage alloy.
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