Wasserstoff absorbierende Legierung für negative Elektrode

摘要

A hydrogen-absorbing alloy electrode having a hydrogen-absorbing alloy in a single crystal system and composed of at least three elements which are coated on a conductive substrate. One of the at least three elements has a density distribution profile with at least two adjacent high density peaks and a lowest density point between the at least two adjacent high density peaks. A density difference between one of the at least two adjacent high density peaks and the lowest density point is not less than about 3.0 wt% and a distance between the two adjacent high density peaks is not less than about 20 mu m. The hydrogen-absorbing alloy has a volume of 2 mu m<3> and may include an additive selected from a group consisting of Manganese (Mn), Boron (B), Tungsten (W) and Cobalt (Co).