The Defect Structure of Lead Dioxide

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Abstract
The initial stages of the electrocrystallization of zinc from an alkaline electrolyte onto a polycrystalline silver substrate are investigated using the potential step method. In the overpotential region where the reaction is predominantly controlled by charge transfer, computer analysis of the experimental current‐time transients with detailed models of nucleation and growth is possible. This gives information about the kinetics of the reaction and the morphology of the crystal growth. It is concluded that the electrocrystallization of zinc proceeds via nucleation and growth, first of a thin layer of primary centers, having low angle of contact at low overpotentials, and subsequently by a layer, which starts to grow via secondary centers, formed at the sites where the primary centers coalesce.

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