Engineering Ni/Ni 3 N/MoN interface with strain modulation toward sustainable high-current-density alkaline seawater hydrogen production via in situ ammonium formation

The NN/MN/NF exhibits an overpotential of 71 mV at 300 mA cm −2 , as well as notable stability over 100 h at 500 mA cm −2 in 1 M KOH natural seawater. Moreover, the in situ formation of NH 4 + inhibits precipitation-induced corrosion of the active sites.