Accession Number : ADD013258

Title :   Process for Charging Silver Electrodes to Monoxide Level.

Descriptive Note : Patent, Filed 5 Jul 83, patented 24 Jul 84,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Katan, Theodore ; Carlen, Pamela J ; Lomond, Ben

Report Date : 24 Jul 1984

Pagination or Media Count : 4

Abstract : The present invention is an improved method of manufacturing silver-oxide electrodes which exhibit high capacity, improved aging characteristics, and do not produce a voltage stabilization dip. In the present invention, an electrode of porous sintered silver ia anodized in the conventional manner in alkaline electrolyte to the so-called peroxide level and usually beyond, into the oxygen-evolution level, where the majority of the silver has been electroformed into divalent silver oxide. The charged electrode is then permitted to wet stand in the electrolyte or other alkaline solution to allow the residual unanodized silver in the electrode to convert a portion of the divalent silver oxide to monovalent silver oxide by a reverse disproportionation reaction. This invention relates in general to silver-oxide alkaline batteries and, in particular, to a process for making silver-oxide electrodes having a high efficiency in silver utilization.

Descriptors :   *PATENTS, *ELECTRODES, *MANUFACTURING, *ALKALINE BATTERIES, SILVER OXIDES, ELECTROLYTES, SILVER, SHELF LIFE, POROUS METALS

Subject Categories : Electrical and Electronic Equipment
      Mfg & Industrial Eng & Control of Product Sys
      Electrochemical Energy Storage

Distribution Statement : APPROVED FOR PUBLIC RELEASE