Abstract
The influence of the Ni content (1.4 - 9.0 wt. %) in electrodeposited Pd-Ni alloy coatings on the rate of hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in an alkaline media was investigated. Electrocatalytic activity of the electrodeposited layers towards methanol oxidation reaction (MOR) was also studied. The composition and surface morphology of the samples were characterized by energy dispersive spectroscopy (EDS) and scanning electron microscopy (SEM). The crystal structure of the Pd-Ni alloys was examined by X-ray diffraction (XRD). Electrochemical experiments were performed by cyclic voltammetry (CV). The presence of concentration ranges with respect to the Ni content is shown, wherein the electrocatalytic activity of the Pd-Ni alloy towards HER, OER and MOR is higher than that of pure Pd.
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