Controllable synthesis of Co3W3N supporting on N-doped GO as electrocatalysts for oxygen reduction reaction

The Co(3)W3N particles as oxygen reduction reaction (ORR) catalyst with small size and high dispersibility was supported on N-doped GO via hydrothermal and ammonia nitriding heat treatment processes. The bonds of W-N, Co-N, pyridinic-N and C-N contribute positively to the oxygen reduction effect of the catalyst. More-over, the synergistic effect of catalyst and support leads to superior ORR performance with more positive half-wave potential and rapid oxygen reduction kinetics, compared to the Pt/C catalyst in alkaline media. The Co3W3N particles decorated on GO might be a promising alternative for non-Pt catalysts for oxygen reduction.