Deriving Paired Fe Sites on N-Doped Carbon from Fe(III)-Tetrapyridinylporphyrin-Modified ZIF-8: Robust Electrocatalysts for Air Electrodes in Zinc-Air Batteries

An efficient ORR electrocatalyst composed of homonuclear paired Fe sites coordinated onto N-doped carbon (Fe 2 –N–C-900) is synthesized by pyrolyzing FeTPyP-modified ZIF-8. The catalyst has better activity and stability than the commercial Pt/C.