Effect of impurity metal (Fe, Co, Ni) on WSex as good hydrogen evolution catalyst

Abstract

Transition metal chalcogenides are recognized as a category of very promising non-expensive and earth-abundant catalysts for Hydrogen evolution reaction (HER) catalysts. Many literature reports appeared recently on metal selenides due to excellent phyco-chemical properties and for HER, this mini review attempt to give some insight on effect of Fe, Co, Ni to WSe_x toward efficiency of HER. From the literature report showed that presence of impurities activity with WSex following within the order of Fe < Co < Ni. Ni and Co addition into the WSe_x have enhanced the electro catalytic HER activity in comparison with the only WSe_x.

Keywords: Catalysis, Transition metal, Dichalcogenides, Electrolysis, tungsten selenide, Liquid/liquid interfaces