Study of electrochemical palladium behavior by the quartz crystal microbalance. I. Acidic solutions

Sorption of hydrogen in a palladium electrode with a limited volume has been studied using the quartz crystal microbalance (QCM). During the hydrogen sorption process in the palladium electrode. strains are generated inside the metal which result in changes in the frequency of the crystal. These stresses change in a non-linear manner during electrode saturation, with alpha- and beta-phases. This effect creates significant problems with the objective estimation of the amount of sorbed hydrogen inside the palladium electrode using the QCM method. This method is more accurate for the study of electrode surface processes, i.e, specific anion adsorption on the electrode surface or electrode dissolution.