Ferrocene Formic Acid Surface Modified Ni(OH)2 for Highly Efficient Alkaline Oxygen Evolution

FeNi-based hybrid materials are among the most representative catalysts for alkaline oxygen evolution reaction (OER), but modulation of their surface atoms to achieve optimal catalytic properties is still a big challenge. Here, we report modification Ni(OH)2/nickel foam (NF)-based electrocatalyst with trace amount ferrocene formic acid (FFA) (FFA-Ni(OH)2/NF) highly efficient OER. Owing strong electron interaction and synergistic effects Fe-Ni heteroatoms, FFA-Ni(OH)2/NF exhibits an overpotential 311 mV at current density 100 mA cm−2. Impressively, cm−2 108 less than that bulk phase doped Ni/FFA(OH)2/NF, demonstrating surprising effect heteroatomic modification. In addition, by introducing small modifier into electrolyte, weak reconstruction process in electrochemical can be fully utilized obvious effects. Therefore, this work proves feasibility improving activities modifying heterogeneous atom pairs.