HYDROGEN ABSORBING ALLOY FOR ALKALINE STORAGE BATTERY AND METHOD FOR PRODUCTION THEREOF, AND HYDROGEN ABSORBING ALLOY ELECTRODE FOR ALKALINE STORAGE BATTERY AND METHOD FOR PRODUCTION THEREOF

A hydrogen absorbing alloy for an alkaline storage battery having a crystal structure of a CaCu5 type and represented by a composition formula MmNixCoyMnzM1-z (in the formula, M is at least one element selected from aluminum Al and copper Cu, x is a composition ratio of nickel Ni and satisfies 3.0