| 简介 |
PROBLEM TO BE SOLVED : To improve high rate discharge characteristics of an alkaline storage battery and charge efficiency thereof in the high temperature condition, and to achieve high capacity, miniaturizing the alkaline storage battery. SOLUTION : The nickel electrode active material for an alkaline storage battery contains nickel hydroxide, a cobalt compound having bivalent or more number of oxidization of cobalt, at least one element selected among an element group formed of ytterbium, erbium, ruthenium and thulium, and a rare earth group element compound having a diffraction peak at points satisfying each formula d=0.885±0.008 nm, d=0.838±0.01 nm, and d=0.759±0.007 nm in an X-ray diffraction diagram by Ka beam of cobalt. |
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