POSITIVE ELECTRODE ACTIVE SUBSTANCE FOR ALKALINE STORAGE BATTERY AND POSITIVE ELECTRODE FOR ALKALINE STORAGE BATTERY USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a positive electrode active substance for an alkaline storage battery and a positive electrode for the alkaline storage battery using the same wherein the alkaline storage battery having a high output and reliability can be manufactured. SOLUTION: Particles in which micro pores are formed are used for these substance and electrode. The composition formula of the particles is expressed as (Ni1-a-b Coa Xb )(OH)2 (0.01<=a<=0.06 and 0.01<=b<=0.06. X is at least one element selected from a group consisting of cadmium, calcium, zinc and magnesium). The volume of the micro pore per 1 g of the particles is 0.01 cm<3> or more and 0.03 cm<3> or less, and the specific surface area of the particles is 5 m<2> /g or more and 20 m<2> /g or less.