Hierarchical hybrid of Ni3N/N-doped reduced graphene oxide nanocomposite as a noble metal free catalyst for oxygen reduction reaction

We report a facile hydrothermal synthetic strategy to fabricate novel hierarchical of Ni3N/N-RGO nanocomposites with various morphologies and structures. It's worth mentioning that the nitrogen atoms are simultaneous doped into the Ni3N and reduced graphene oxide, which can provide more multi-active sites for these nanocomposites and exhibit enhanced catalytic performance towards the ORR. The Ni3N/N-RGO-30% exhibits superior activity and high tolerance to methanol poisoning towards oxygen reduction reaction (ORR), which are ascribed to the synergetic effect between Ni3N and nitrogen doped reduced graphene oxide.