Activation of defective nickel molybdate nanowires for enhanced alkaline electrochemical hydrogen evolution

A series of N doped porous metallic NiMoO₄ nanowires with concomitant oxygen vacancy defects (N-V_o-NiMoO₄ NWs) were prepared as a catalyst for HER in alkaline media. Volcano-like fashion was exhibited for N-V_o-NiMoO₄ NWs on various amount of doped-N, with N3-V_o-NiMoO₄ NWs being the best one.