Abstract
The comparative electrochemical properties of Pt electrodes have been studied in liquid at 429°C and solid at 300°–417°. At all temperatures, a significant time range of ideal polarization kinetics was observed. The intrinsic double‐layer capacitance is the same for liquid and solid and is constant over the solid‐state temperature range investigated. In addition, the principal characteristics of Ag submonolayer deposition are the same above and below the melting point. The results indicate the electrochemical properties are determined by an interfacial ion layer whose characteristics are independent of the state of the electrolyte. Decreasing double‐layer charging rates were observed with decreasing solid‐state temperature and are attributed to interface strain due to differential thermal contraction.
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