Changes in the EQCM response of platinum deposits in the hydrogen region induced by repetitive cycling of the electrode

Abstract

The effect of ageing the electrode on the mass response was studied by two approaches, namely: i) ageing the Pt deposits on the Au/Q substrate and ii) ageing the Au/Q substrate and then examining the response of the Pt deposit on the aged Au/Q. Mass changes in the H-region are observed in both cases, which are attributed to an increase in water adsorption/desorption on the Pt surface, due to changes in the structure of the Pt deposit. These changes are not visible in CV curves.