LONG LIFE STABLE ZINC ELECTRODES FOR ALKALINE SECONDARY BATTERIES.
Abstract
Edge overlap-zinc oxide addition combinations have resulted in up to 25% capacity improvement. A 1:1 relationship between capacity and zinc per Ampere-hour was observed. Teflon content increases from 7% to 9% improved performance 10%. Lowering the cure temperature also improved performance, but the change was small. Better electrode performance is obtained at high c.d. when a Teflon binder is used. Carbon-activated recombination electrodes were found to give good end-of-charge signals. A cut-off device was designed to by-pass sealed cells on signal. Cycling on the 6-hr. regime has shown that 300 cycles are easily obtainable. Cycle life can be increased substantially by increasing the end-of-charge cut-off. Reference electrode control of charge cut-off is under investigation. Geometry considerations have resulted in the development of an electrode with more zinc at the edges and a center pocket. Cells with this type of electrode have vastly improved performance over the first 114 cycles. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1967
- Accession Number
- AD0828224
Entities
People
- J. Goodkin