Self‐Supported Graphite/Graphene/NiFe‐LDH Electrodes for High Performance Oxygen Evolution Reaction

Abstract

Abstract Reducing energy consumption and improving energy utilization efficiency has become the focus of research in the 21 st century. Electrocatalytic water splitting is one of the promising strategies for producing hydrogen energy. In this study, the non‐noble nickel‐iron layered double hydroxide (NiFe‐LDH) catalyst is deposited on the electrochemically intercalated graphite/graphene (G/GE) substrate and directly used as the self‐supported and binder‐free electrode for electrocatalytic water oxidation. The Ni 2 Fe 1 ‐LDH@G/GE catalyst shows a low overpotential of 194 mV at a current density of 10 mA cm –2 , which is better than the noble metal catalyst IrO 2 (314 mV) and RuO 2 (330 mV) and many other related works. This research provides a facile way to directly prepare the catalyst electrode with high performance and low cost.