▎ 摘　　要

Water splitting is considered as one of the recommendable techniques to realize clear and renewable hydrogen production. However, it suffers from lacking efficient and sustainable catalysts. Herein, a metal-organic framework/graphene oxide pyrolysis strategy was proposed to prepare nitrogen-doped porous carbon-stabilized alloys supported on reduced graphene oxide (PdCo@N-C/rGO) composite. When evaluated as an electrocatalyst for hydrogen evolution reaction (HER), the as-obtained PdCo@N-C/rGO shows an excellent performance in acidic media including positive onset potential close to that of commercial Pt/C (vs. SCE), low overpotential and Tafel slope, as well as long-term durability. Also, it delivers outstanding HER activities in alkaline and neutral conditions. The excellent performance could be mainly ascribed to their synergetic effect among alloy particles, nitrogen-doped porous carbon shell, and conductive rGO substrate. [GRAPHICS]