Electrocatalytic water splitting with unprecedentedly low overpotentials by nickel sulfide nanowires stuffed into carbon nitride scabbards

The unprecedentedly low overpotential of 32 mV for oxygen evolution was attained by forming a unique motif of NiS x nanowires stuffed into C 3 N 4 scabbards. With this system, electrocatalytic water splitting was demonstrated at the lowest overall overpotential of 72 mV.