| 摘要 |
PURPOSE:To obtain a storage battery maintaining high capacity for a long period by providing a hydrogen occlusion electrode with a specific hydrogen occlusion material. CONSTITUTION:An alloy, which is expressed by MmCo(5-x)Ax (Mn denotes a misch metal) wherein A represents Al, Mn, Cu or Cr and (x) is within the range of 0<x<=1, is used as a hydrogen occlusion material. Said hydrogen occlusion material gives slight deformation of crystalline grids while being hard to cause pulverization when occluding and emitting hydrogen due to charging and discharging. And holding of hydrogen occlusion material powder is continued while suppressing a drop in mechanical strength and conductivity as well as deterioration in the battery capacity for a long period. |
