文摘
We developed a three-dimensional (3D), N-doped, plasma-etched graphene (3DNG-P). 3DNG-P could be used as an efficient and robust metal-free HER catalyst. Plasma-etching could create more structural defects on graphene. 3DNG-P combined the merits of 3D porous networks, N-doping and enriched defects. 3DNG-P displayed a favorable HER activity and stability over a wide pH range.