| 摘要 |
PURPOSE:To increase electrode life by using CaCU5 structure alloy prepared by including at least one of Si, Ti, V, Fe, Co, Zn, Y, Zr, Nb, Mo, Hf, Ta, and alkaline earth metal in Mischmetal and nickel. CONSTITUTION:Mischmetal, titanium, and nickel are mixed in a composition ratio of 0.9:0.1:5 and heated, melted, and allowed, then crushed to obtain Mm0.9Ti0.1Ni5 powder having CaCu5 crystal structure. A hydrogen occlusion electrode is produced with the hydrogen occlusion alloy powder obtained. By using the hydrogen occlusion electrode as a negative electrode of alkaline stor age battery, the battery maintains high capacity for a long time. Even if at least one of Si, V, Fe, Co, Zn, Y, Zr, Nb, Mo, Hf, Ta and alkaline earth metal is used instead of titanium in the above hydrogen occlusion alloy, the alkaline storage using this hydrogen occlusion electrode keeps high capacity for a long time. |
