Hierarchical Co/MoNi heterostructure grown on monocrystalline CoNiMoOx nanorods with robust bifunctionality for hydrazine oxidation-assisted energy-saving hydrogen evolution

Bifunctional CoNiMo/CoNiMoO x catalyst for accelerating hydrazine oxidation (−23 mV at 100 mA cm −2 ) and seawater reduction (−79 mV at 100 mA cm −2 ). Such catalyst assembled hybrid seawater electrolyzer demands only 0.143 kW h m −3 H 2 at 100 mA cm −2 .