The coupled electrocatalyst synergy fabrication for the electrochemical oxygen evolution reaction: From electrode to green energy system

Advanced, functional, and novel electrocatalytic material for the electrochemical water splitting is core to the renewable energy sector. Herein, we fabricated CoCu oxide functional material on the nickel foam by a hydrothermal method that is highly rich in copper nanoparticles. The composite material showed superfast electrocatalytic performance in the oxygen evolution reaction (OER). A distinguished durability test was obtained; the Tafel slope is relatively weak on an overpotential at 10 mA/cm² obtained potential 270 mV and was determined for the developed electrocatalyst, which is very closer to the RuO/C. The attractive features of the newly developed material are high abundance in nature, environment-friendly, cost-effectiveness, and superior for the OER activity being non-precious material. The developed catalyst revealed good stability and durability, which indicate its practical applications and long-term stability. This strategy offered to effectively hierarchical low-cost and best structural properties for the electrocatalyst containing rare-earth metals.