Patent ID: 7226693

Claim:
A method of producing a cadmium negative electrode for alkaline batteries, which comprises a porous, nickel-coated sintered electrode core body, the process comprising the steps of: (a) coating a surface of a porous electrically conductive core body with nickel powder, (b) drying and sintering the product of step (a) to form a nickel sintered electrically conductive core body, (c) immersing the nickel sintered electrically conductive core body in an impregnating solution containing cadmium nitrate, (d) drying, (e) subjecting the dry nickel sintered electrically conductive core body to alkali treatment so that the pores of the nickel sintered core body are filled with cadmium hydroxide to produce a cadmium negative electrode, (f) applying a preliminary charge to the cadmium negative electrode, and (g) applying polyethylene glycol to a surface of said cadmium negative electrode, which exposes to a surface of the electrode, and a surface of said cadmium hydroxide containing β-Cd(OH) 2 , which exposes to a surface of the electrode, by coating or impregnating with polyethylene glycol having a mean molecular weight of 600 or higher but not more than 20000 dissolved in a solvent.