NiFe Alloy Electrocatalysts toward Efficient Alkaline Hydrogen Oxidation

We report the pyrolysis of NiFe‐containing nanocrystals, which leads to 10.2±2.4 nm NiFe alloy particles embedded in carbon with an exceptional area specific exchange current density of 0.048 mA cmNi−2 toward the alkaline hydrogen oxidation reaction (HOR). The high activity primarily originates from optimized hydrogen and hydroxyl adsorption strength due to alloying effect between Ni and Fe. The Ni90Fe10−C−500 electrocatalyst exhibits an exceptional activity toward the alkaline hydrogen oxidation reaction as compared with that of Ni−C−500 and other Ni‐based electrocatalysts. The high performance seems to mainly originate from the charge transfer from Ni to Fe and thus the appropriate HBE and OHBE of Ni90Fe10−C−500.