AUXILIARY ELECTRODE FOR CHARGE CONTROL OF SEALED NICKEL-CADMIUM BATTERIES.

Abstract

Twelve auxiliary electrode materials made by electroplating four kinds of carbonized cloth and platinum screen and foil with Grey or Black platinum were tested as O2 reduction electrodes in 0.5 to 2 atmospheres O2 at room temperature and -40 degrees. Type of platinum and substrate were significant in determining performance. Black and Grey on VCB carbon cloth, and Black on WCB graphite cloth were the best of those tested. VCB Black probably can be used even at -40 degrees. H2 evolution potential measurements in the absence of O2 indicated that H2 evolution during the early stages of charging may be a problem; there was little difference between Grey and Black except on platinum foil. A commercial sealed Ni/Cd cell (thin plates) was tested (using can expansion as pressure indication) to determine charge acceptance at rates up to 5C at room temperature, 120 and 0 F. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 03, 1964
Accession Number
AD0456849

Entities

People

  • Philip F. Grieger

Tags

DTIC Thesaurus Topics

  • Atmospheres
  • Coatings
  • Deposition (Materials Processing)
  • Electrodes
  • Electroplating
  • Graphitic Materials
  • Materials
  • Materials Processing
  • Measurement
  • Nickel Cadmium Batteries
  • Personal Information Managers
  • Platinum
  • Substrates

Readers

  • Battery Technology and Engineering
  • Polymer Science and Engineering.
  • Surface Engineering/Surface Coating Technology.