AUXILIARY ELECTRODE FOR CHARGE CONTROL OF SEALED NICKEL-CADMIUM BATTERIES.
Abstract
H2 evolution potential (N2 atmosphere) for unplatinized carbonized cloths and charging potential of a cadmium plate were determined. Using these and charge acceptance data previously obtained for a sealed cell, volume of H2 evolved before onset of O2 evolution was estimated for various cell charging rates up to 5C and found to be small; but analogous estimates indicate platinized cloths require a diode and/or resistance (possibly supplemental to that already present) in the signaling circuit. Unplatinized cloths when retested for O2 reduction performed more poorly but both tests are suspect. Thirty pieces of VCB Grey, VCB or WCB Black were plated from a given bath: weight of Pt deposited and O2 reduction performance were independent of order plated, but performance was much less than previously observed--probably mainly because too much electrolyte was present. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 14, 1964
- Accession Number
- AD0458044
Entities
People
- Philip F. Grieger