Measurements of the stress in lead dioxide deposits formed anodically on a nickel substrate are reported for acid lead nitrate electrolytes. In simple acid electrolytes, the electrodeposit is compressively stressed, high stress is favoured by low [Pb2+]. The effect of additions of organic acid anion is pronounced; depending on the concentration of the organic anion, stress may be partly or completely relieved. Addition of sufficient organic anion causes a reversal of the stress from compressive to tensile. The results may be interpreted in terms of adsorption at the electrode.
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References
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See e.g. Evans, U. R., ‘The corrosion and oxidation of metals’, 1960, Chap. XV. (London: Edward Arnold Ltd.)
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SnavelyC. A., J. electrochem. Soc., 1947, 94, 537
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SnavelyC. A., & FaustC. L., J. electrochem. Soc., 1950, 97, 466
