Alkaline storage battery

摘要

A high energy density alkaline storage battery which uses a positive electrode comprising mainly nickel oxide is provided by increasing the capacities of the positive electrode and negative electrode. For increasing the capacity density of the positive electrode, the active material is incorporated as a solid solution with at least one element selected from manganese, chromium, aluminum and calcium in the range from not less than 3 mol% to not more than 15 mol% relative to the active material, and the surface and/or the neighborhood of the surface of the active material are coated with a cobalt oxyhydroxide having a high electric conductivity of a specific resistance of 15 OMEGA .cm or less and a low crystallinity.