Integrating the active OER and HER components as the heterostructures for the efficient overall water splitting

The OER-active Ni3N and HER-active NiMoN have been integrated as Ni3N-NiMoN heterostructures anchored on carbon cloth for the high-effective overall water splitting. The catalysts can achieve a current density of 10 mA cm−2 at an overpotential of 31 mV for HER and an overpotential of 277 mV for OER. The cell assembled by Ni3N-NiMoN heterostructures as both the cathode and anode only needs a cell voltage of 1.54 V to achieve 10 mA cm−2 for overall water splitting.418