| 摘要 |
PURPOSE:To provide a metal oxide-hydrogen storage battery having lower cost than a conventional battery and yet having equivalent function by restraining an extent of refining alloy powder for the improvement of a hydrogen storage electrode through the use of a hydrogen storage alloy containing a less cobalt amount in an alloy composition than the conventional case. CONSTITUTION:The predetermined amount of one or more types of powder of iron oxide Fe2O3 and FeOO is added to hydrogen storage alloy powder. As a result, the aforementioned iron oxide powder enters the crack of the allay powder generated due to repeated charging and discharging processes. An extent of refining the alloy power is thereby restrained, and the lifetime of a hydrogen storage electrode can be extended to such level as similar to the conventional case. An amount of the iron oxide to be added is preferably between 0.1 pts.wt, and 10 pts.wt. in consideration of a balance between electrode lifetime characteristics and initial capacity. |
