Patent ID: 7998329

Claim:
A method for producing a porous nickel foil for a negative electrode of an alkaline battery comprising the steps of producing porous nickel foil of 10-35 μm thick by an electrolytic deposition method and softening or annealing the porous nickel foil such that the porous nickel foil has a Vickers hardness of 70-130, said electrolytic deposition method in said step of producing porous nickel foil includes the step of depositing nickel foil on a surface of an electrodeposition drum having holes filled with insulating resin, wherein the nickel foil includes through-holes formed at positions corresponding to the insulating resin, wherein the ratio of depth L and diameter D (L/D) of the hole filled with insulating resin is at least 1 and no clearance, into which deposited metal otherwise cuts in a wedge shape, wherein no opening exists at the boundary between the insulating resin filled in the hole and an opening edge of the hole.