In situ grown, self-supported iron-cobalt-nickel alloy amorphous oxide nanosheets with low overpotential toward water oxidation.

Electrocatalytic water oxidation by in situ grown iron-cobalt-nickel ternary alloy amorphous oxides is reported. This catalytic material was prepared by simple anodization of an alloy plate followed by low-temperature annealing, which shows superior electrocatalytic activity toward oxygen evolution reaction with an overpotential of only 170 mV and a low Tafel slope.