EFFECTS OF FOREIGN IONS ON NICKEL HYDROXIDE AND CADMIUM ELECTRODES

Authors
  1. Casey, E.J.
  2. Dubois, A.R.
  3. Lake, P.E.
  4. Moroz, W.J.
Corporate Authors
Defence Chemical Biological and Radiation Labs, Ottawa ONT (CAN)
Abstract
The behavior of individual positive and negative electrodes of the sintered plate nickel-cadmium battery system in the presence of foreign ions in KOH solutions has been examined. Carbonate choke: The variation of electrochemical capacity as a function of carbonate contamination of the electrolyte, temperature, and current density was measured for both positive and negative electrodes. The effect of carbonate on the negative cadmium electrode is much greater than on the positive. The general mechanism and the role of intermediate complexes are discussed. Nitrate shuttle: Self-discharge occurs in cells containing nitrate, as a result of reduction of NO3- to NO2- at the cadmium electrode with subsequent reoxidation to NO3- at the nickel hydroxide electrode. Cations on the positive: Addition of Li+, Ag+, Sb+3, Al+3, and As+3 to the electrolyte had effects on capacity and on charge-retention of well-formed nickel hydroxide positive electrodes. TRUNCATED
Report Number
DCBRL-453 — Reprint; Previously catalogued as DSIS 65-09703
Date of publication
15 Apr 1965
Number of Pages
14
Reprinted from
Journal of the Electrochemical Society, vol 112, no 4, 1965, p 371-383
DSTKIM No
89-01247
CANDIS No
59179
Format(s):
Hardcopy;Originator's fiche received by DSIS

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