Patent ID: 6613107
Filing Date: 2003-09-02
Classification: H01M,Y02E,Y10T

Abstract:
A method of producing a nickel electrode for an alkaline storage battery comprising loading a positive-electrode active material containing nickel hydroxide as its principal component into the pores of a porous electrically conductive substrate, the method comprising:an active-material loading step comprising preparing an active-material loaded plate electrode by loading an active-material containing nickel hydroxide as its principal component into the pores of said porous electrically conductive substrate; an immersion step comprising immersing said active-material loaded plate electrode into an impregnation solution comprising an acid salt solution containing at least one element selected from the group consisting of Ca, Sr, Sc, Y, Al, Mn, and lanthanides; and an alkali treatment step comprising forming a hydroxide layer of at least one element selected from the group consisting of Ca, Sr, Sc, Y, Al, Mn, and lanthanides by immersing said plate electrode into an alkaline solution; provided that the temperature of the impregnation solution is controlled in a range of from 40 to 90Â° C. and that the pH value of impregnating solution is controlled to a range of from 4 to 6.