The Electrochemistry of Tin

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Abstract
The kinetics of the electrodeposition of tin were studied from simple acid solutions containing various nonionic organic additives. Many of these substances produced a large increase in the cathodic polarization. The similar behavior at solid polycrystalline tin and liquid tin‐amalgam cathodes implies that the rate‐determining step responsible for the polarization is substantially the same at each electrode in the presence of the adsorbed organic additive. Qualitative evidence is presented for the adsorption of nonionic organic molecules on the electrode surface. A probable rate‐determining step is the transfer of cations through a barrier of adsorbed organic molecules to the electrode surface. The formation of this barrier is kinetically limited rather than diffusion‐limited.

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