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US 4,399,005 AGranted
Method of nickel electrode production
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorsDavid H. Fritts, John F. Leonard
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Abstract
A method for preparing nickel electrodes is provided in which zinc hydroxide is deposited onto a metal plaque simultaneously with nickel hydroxide. A nickel electrode so prepared exhibits improved dimensional stability.
Claims7
A process for making a nickel electrode which comprises the steps of:
- (a) immersing a porous, electrically conductive plaque in an electrolyte bath provided with a counter-electrode, said bath comprising an aqueous solution of nickel nitrate;
- (b) forming the conductive plaque against the said counter-electrode at a desired current density;
- (c) continuously adding, at a desired rate, an aqueous solution of zinc nitrate to said electrolyte bath;
- and
- (d) continuing said forming step (b) and said addition step (c) for a time sufficient to convert the metal nitrates in the pores of said plaque to a desired level of the corresponding metal hydroxides.
2 more elements
Dependencies are inferred from the claim text.