| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealed nickel hydrogen battery with high capacity by controlling the discharge reserving amount with a hydrogen storage electrode prepared by adding a metal oxide or a metal hydroxide to hydrogen storage alloy powder. SOLUTION: A suitable amount of cobalt monoxide powder is added to hydrogen storage alloy powder whose basic structure is MmNi5 comprising misch metal (Mm) which is a mixture of rear earth metals and nickel (Ni) to produce an active material, a carboxymethylcellulose aqueous solution serving as a thickening agent is added to the active material, they are mixed to prepare a pasty material, the specified amount of pasty material is filled in a nickel porous substrate, and they are dried, then pressed to obtain a hydrogen storage electrode. By adding a suitable amount of cobalt monoxide to the hydrogen storage alloy electrode, discharge reserving amount can be reduced. Thereby, a sealed nickel hydrogen battery with high capacity is obtained. |
