Patent ID: 7594938

Claim:
A method of producing an enclosed nickel-zinc primary battery comprising implementing nickel compound grains composed of ball-shaped grains, substantially ball-shaped grains, or an aggregation of both, as an anode active material; granulating an anode mixture prepared by mixing at least carbon grains to said anode active material into a granular form, wherein said carbon grains have a specific surface area of 1.0-300 m 2 /g and are present in an amount of 3-15 wt. %, based on the total weight of said anode mixture; thereafter molding said granular form by compression molding and thereby preparing a hollow, cylindrical anode mold; inserting said hollow, cylindrical anode mold in a metal can; placing a separator inside a hollow cylindrical portion of said anode mold; inserting a cathode collector in a gel cathode, and sealing an opening of said can with a can seal plate.