▎ 摘　　要

Heteroatoms doped metal-free carbon catalysts are considered as promising alternatives to commercial Pt/C for oxygen reduction reaction (ORR). Here, we report a phosphorus-enriched nitrogen and phosphorus co-doped graphene catalyst (PANAGr) via a facile and economical two-step pyrolysis approach. Thanks to its outstanding properties, such as unique honeycomb-like morphology, high Brunauer-Emmett-Teller (BET) surface area (935 m(2)/g), and abundant of phosphorus content (2.61 at%), the obtained PANAGr exhibits a high ORR activity with a half-wave potential of 0.82 V and a limiting current density of -5.98 mA cm(-2) in alkaline electrolyte solution. Notably, the zinc-air battery assembled with PANAGr as cathode catalyst also shows an excellent discharge performance and stability.