Accession Number : ADD014231

Title :   Silver-Nickel Composite Cathodes for Alkaline Secondary Batteries.

Descriptive Note : Patent Application, Filed 16 Aug 89,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Ferrando, William

Report Date : 16 Aug 1989

Pagination or Media Count : 13

Abstract : A method for producing lightweight silver-nickel composite electrodes by infiltrating a graphite fiber plaque with a suspension of finely divided nickel powder in an aqueous solution of AgNO3; drying the graphite fiber plaque to produce a coating of AgNO3 crystals and nickel particles on the surfaces of the graphite fibers; heating the coated graphite fiber plaque at a temperature about the melting point of AgNO3 until the AgNO3 melts and wets the nickel particles and the surfaces of the graphite fibers; and heating the molten AgNO3 coated graphite fiber plaque at a temperature from the decomposition temperature of AgNO3 to about 600 C until the AgNO3 decomposed to form a thin uniform silver metal coating over the nickel particles and the surfaces of the graphite fibers. The silver-nickel particle coated graphite plaques is electrochemically treated to convert the silver to silver active material (Ag2O2) and the nickel to nickel active material Ni(OH)2). Keywords: Silver peroxide; Silver nitrate; Nickel hydrocide; Patent applications. (KT)

Descriptors :   *ALKALINE BATTERIES, *CATHODES, *NICKEL COMPOUNDS, *SILVER COMPOUNDS, *ELECTRIC BATTERIES, CARBON FIBERS, DRYING, GRAPHITE, MATERIALS, NITRATES, PARTICLES, PATENT APPLICATIONS, PEROXIDES, POWDERS, SILVER

Subject Categories : Inorganic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE