Electrocatalytic hydrogen production on carbon felt modified with reduced graphene oxide/au nanoparticles

In this study, to get hydrogen electrochemically from water, it is aimed to develop a new electrocatalyst with high catalytic activity to increase the rate of hydrogen evolution reaction (HER) by reducing the overvoltage in the electrolysis system. As the electrode material, carbon felt (C) was coated with reduced graphene oxide (rGO) and Au nanoparticles were formed by gold electrodeposition. It was determined that the rGO/Au nanoparticles film synthesized on carbon felt increases the hydrogen evolution reaction activity. The surface properties of the composite structures determined by scanning electron microscopy (SEM) and the chemical composition of the surfaces analyzed by energy dispersed X-ray spectroscopy (EDX). Electrocatalytic activities of the composite structures in the hydrogen production from water were investigated by electrochemical methods such as cyclic voltammetry (CV), Tafel polarization curves and electrochemical impedance spectroscopy (EIS).