Fabrication of Graphene Oxide-Decorated Mesoporous NiFe2O4 as an Electrocatalyst in the Hydrogen Gas Evolution Reaction

An electrocatalyst for the hydrogen evolution reaction has been successfully synthesized from graphene oxide (GO) decorated with mesoporous NiFe2O4. A high catalytic activity performance was reached by using GCE surface as a conductor, and composite contained GO/NiFe2O4. Based on results, as-prepared exhibited overpotential HER of 36 mV vs. RHE at 10 mA current density, an electrochemical active area (ECSA) 3.18 × 10?4 cm2. Additionally, demonstrated considerably good after 9000 s stability test. It is believed that such enhancement in electrocatalytic due to synergistic effect between unique porosity feature NiFe2O4, which may provide more surface, conductivity GO.