An Fe–N–C hybrid electrocatalyst derived from a bimetal–organic framework for efficient oxygen reduction

An Fe–N–C hybrid catalyst is successfully fabricated by a simple one-step pyrolysis of bimetallic Zn/Fe-ZIFs. The introduction of iron into Zn-based ZIF-7 to form the bimetallic MOF precursors could catalyze the in situ formation of CNTs crossed porous carbons, forming a 3D hybrid network, which exhibits excellent ORR activity.