To provide a battery having high efficient discharging characteristic by coating a collector with the paste having the active material containing hydroxide, thermal cracking binder and a solvent, and heating the collector for eliminating a part or the whole of the binder.

A collector is coated with a paste composed of the positive electrode active material mainly composed of hydroxide nickel, thermal cracking binder and the conductive agent, and dried to form a coating electret plate. Thereafter, electrolytic plating or non-electrolytic plating is conducted so as to form the nickel plating on a surface of the coated electrode plate. This coated electrode plate is heated at a thermal cracking temperature of the hydroxide nickel or less to eliminate a part or the whole of the thermal cracking binder, and thereafter, a positive electrode is formed by pressing. After eliminating the thermal cracking binder, nickel plating is formed in a surface of the paste type electrode plate again, and washing, drying and pressing are performed to form a positive electrode. A half value temperature of the thermal cracking binder in vacuum is set at 350°C or less, and as a thermal decomposing condition, a condition in the vacuum or in the inert gas at the thermal cracking temperature of the hydroxide nickel or less is desirable.