Investigation of Lead Anodes in the Electrolysis of Zinc Sulfate Solutions

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Abstract
The effects of impurities, either in solution or alloyed with lead, on anodic reactions in electrolytic zinc deposition were studied. The results show that the lead content of deposited zinc is due chiefly to occluded lead dioxide and the only impurities, of those investigated, that inhibited the formation of lead dioxide are cobalt as sulfate in solution, and silver alloyed with lead as anode. The degree of anodic polarization is a function of the log of the current density. It is indicated that the ratio between the surface of a silver‐lead alloy anode and of a pure lead anode can be determined from the difference in anodic polarizations of these electrodes.

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