The Preparation and Thermodynamic Properties of a Palladium-Hydrogen Electrode

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Abstract
The potential of a palladium‐hydrogen electrode prepared by electrolytic methods was studied as a function of the composition of the electrode, temperature, and pH. The objective of these studies was to prepare a palladium hydrogen reference electrode which can be used in hydrogen free solutions. The potential was found to be a function of the electrode composition in the α phase, and β phase, and independent of composition in the phase region. Equations were derived starting from fundamental thermodynamics which fit the potential vs. composition data in the α phase, and in the phase region, as well as the temperature dependence for such an electrode. The procedure for preparing a palladium hydrogen reference electrode by electrolytic methods is given.

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