Homologous heterostructures of Ni/NiFeO Mott–Schottky for alkaline water electrolysis

An in situ strategy is proposed to fabricate a Mott–Schottky Ni/NiFeO catalyst composed of Ni nanoparticles over NiFeO nanosheets, which leads to charge transfer from Ni to Fe and promotes the bifunctional activity for the HER and OER.