Process for Charging Silver Electrodes to Monoxide Level.
Patent, Filed 5 Jul 83, patented 24 Jul 84,
DEPARTMENT OF THE NAVY WASHINGTON DC
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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.
- Electrical and Electronic Equipment
- Manufacturing and Industrial Engineering and Control of Production Systems
- Electrochemical Energy Storage