Abstract
AbstractNon‐precious metal nanocomposite has attracted extensive attention as an effective catalyst for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Herein, hierarchically porous N‐doped carbon nanofibers supported Fe3C/Fe nanoparticles (denoted as Fe/N‐HCNFs) have been successfully fabricated. The synthesis involved the successive steps of electrospun polyacrylonitrile (PAN) and zeolitic imidazolate framework (ZIF‐8) nanofiber, surface functionalization of tannic acid (TA), coordination with ferric salt and carbonization. The obtained Fe/N‐HCNFs exhibited enhanced electrocatalytic performance for both ORR and OER. Furthermore, Fe/N‐HCNFs delivered a higher power density and an excellent long‐term stability when applied in a constructed Zn‐air battery, which illustrated its outstanding prospects for energy storage and conversion.
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