| 摘要 |
PURPOSE:To provide a hydrogen storage electrode having a high service capacity and a high discharge voltage by forming a hydrogen storage alloy with the La, Mn, Cu, etc., in a specified ratio and specifying the oxygen content of the alloy powder. CONSTITUTION:This hydrogen storage alloy is expressed by LmNiaCobAlcMd. In the formula, Lm is La-rich Mm the La in the Lm is controlled to 40-70mol%, 1.2<=a<=1.6, 0.1<=b<=0.4, 0.05<=c<=0.1, 0.1<=d<=0.3, and 1.8<=a+b+c+d<=2.4, and M is at least one kind among Mn, Cu, Zn, Ag, In, Sn and Pb. The oxygen content of the alloy powder is adjusted to 0.05 to 0.3wt.%. Consequently, hydrogen is electrochemically occluded and discharged. |
