LONG LIFE STABLE ZINC ELECTRODE FOR ALKALINE SECONDARY BATTERY.

Abstract

The contoured electrode studies show that 500 cycles are possible with contoured zinc electrodes without special charging conditions. The life cycle performance of these electrodes is a function of the contour depth. An optimum appears for the 5 Ah cells on the 60% D.D. regime at 0.37 central to peripheral ratio. New contour designs, employing speherical depressions, are being evaluated. Polarization studies have shown that the concentration of Teflon in the negative does not affect performance initially, but improves cell potential near the end of cycle life. Extended edges materially improve the performance of zinc electrodes; Teflonation further increases cycle life performance. Doping of zinc electrodes as an approach to reducing shape change and extending cycle life is being investigated. Overcharge and state-of-charge studies have been initiated. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1968
Accession Number
AD0837262

Entities

People

  • J. Goodkin

Tags

DTIC Thesaurus Topics

  • Cycles
  • Depression
  • Electrodes
  • Life Cycles
  • Long Life
  • Polarization
  • Storage Batteries

Readers

  • Battery Technology and Engineering
  • Systems Analysis and Design