2D Metal–organic framework derived Co/CoSe 2 heterojunctions with interfacial electron redistribution as bifunctional electrocatalysts for urea-assisted rechargeable Zn–air batteries

Benefiting from the structure and interface engineering, the electrocatalyst of Co/CoSe 2 @CNx presents superior ORR/UOR bifunctional performance with high stability and high energy conversion efficiency for urea-assisted rechargeable Zn–air batteries.