Solvothermally synthesized micro spindle SrMoO4/rGO hybrid as efficient electrocatalyst for hydrogen evolution reaction from acid water

Abstract

This work examines SrMoO4 spindle particles decorated at reduced graphene oxide (SrMoO4@rGO) as hydrogen-evolving electrocatalysts in acid-water electrolytes. A facile solvothermal method was employed for the preparation of SrMoO4@rGO. The phase formation and presence of rGO were confirmed using X-ray diffraction (XRD) and morphology was determined by Transmission electron microscopy (TEM) and Field emission scanning electron microscope (FESEM). The developed material's electrochemical hydrogen evolution reaction (HER) activity was studied using various voltammetric techniques in a three-electrode cell system in an acidic environment. A comparative study of HER activity among SrMoO4, SrMoO4@rGO, 20 wt.%Pt/C has been done. An increased rate of hydrogen evolution was observed for SrMoO4@Rgo compared to free-standing SrMoO4.