Nickel-series rechargeable battery and process for the production thereof

A process for producing a rechargeable battery comprising at least a cathode, an anode, a separator, and an electrolyte comprising an alkali electrolyte solution, said cathode comprising an active material layer and a collector, said process including a step of forming said active material layer of said cathode by using (a) an amorphous phase-bearing nickel hydroxide particulate which in X-ray diffraction using Kα-rays of Cu as a radiation source, has a diffraction peak of a (001) face appeared near a diffraction angle 2θ=19° having a half-value width of more than 1.2° and has a diffraction peak of a (101) face appeared near a diffraction angle 2θ=38° having a half-value width of more than 1.5°, (b) an electrically conductive material comprising a metallic cobalt or/and a cobalt compound, and (c) an additive comprising at least one kind of a metal compound selected from the group consisting of alkaline earth metal compounds, rare earth metal compounds, transition metal compounds of transition metal elements belonging to groups 4B, 5B, 6B, and 7B of the periodic table, and metal compounds of metal elements belonging to group 3A of the periodic table.