Highly exposed discrete Co atoms anchored in ultrathin porous N, P-codoped carbon nanosheets for efficient oxygen electrocatalysis and rechargeable aqueous/solid-state Zn–air batteries

The ultrathin porous nanosheet structure and optimized N and P dual-coordinated Co active sites enable high performances of Co SA /NPC in oxygen electrocatalysis and rechargeable aqueous and flexible solid-state ZABs.