| 摘要 |
PURPOSE:To improve a preservation characteristic at high temperature without detracting high capacity and an initial stage discharge characteristic, by solving a problem that a preservation at 65 deg.C is very inferior when sealed batteries are made by utilizing Zr-Mn-V-M-Ni system Laves phase hydrogen storage alloy electrodes. CONSTITUTION:This electrode is constituted with hydrogen storage alloy or its hydride of which a general formula is shown by ZrMnwVxWyNiz, (wherein 0.4<=w<=0.8, 0.1<=x<=0.3, 0<y<=0.1, 1.0<=z<=1.5, and 2.0<=w+x+y+z<=2.4); and the main component of an alloy phase is C15 (MgCu2) type Laves phase. |
