Effect of Antimony on Lead-Acid Battery Negative Electrode

摘要

The objectives of this investigation have been (1) to relate the lead electrode charge efficiency to antimony concentration, (2) to analyze the effect of the interaction of antimony and lignin-expander on the lead-electrode behavior, and (3) to determine the critical lead-electrode potential necessary to purge antimony. Pasted type and small Plante' type lead-electrodes were prepared and tested to determine the effect of antimony by cathodic linear potential sweep charging. Antimony and/or lignin-expander were included either in electrolyte or in paste matrix. Results showed a significant contribution of antimony in decreasing charge efficiency and an overwhelming role of expander in suppressing the effect of antimony on charge efficiency. The critical lead-electrode potential fore purging antimony from the electrode is close to -1.275 V (vs. Hg/Hg sub 2 /SO sub 4 ). (ERA citation 08:051366)