Rapid electrodeposited of self-supporting Ni-Fe-Mo film on Ni foam as affordable electrocatalysts for oxygen evolution reaction

Abstract Exploring cost-effective and high-efficiency noble-metal free electrocatalysts for oxygen evolution reaction (OER) are of critical importance to the area of renewable energy storage and conversion systems. Herein, Ni–Fe–Mo films were fabricated via electrodeposition method with a very high current density. The film exhibits excellent activity towards OER with a overpotentials of 306 mV at current density of 10 mA·cm−2 and a lower Tafel slope of 77.1 mV·dec−1 under alkaline conditions (30 wt.% KOH). The synergistic effect of the Mo, Ni, and Fe contribute the improved catalytic activity for OER.