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Hierarchical Porous N‐doped Carbon Nanofibers Supported Fe 3 C/Fe Nanoparticles as Efficient Oxygen Electrocatalysts for Zn−Air Batteries
Author(s) -
Li Qin,
Zhao Jing,
Wu Mengchen,
Li Congling,
Han Lei,
Liu Rui
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201803351
Subject(s) - materials science , oxygen evolution , carbonization , chemical engineering , polyacrylonitrile , nanoparticle , nanofiber , catalysis , surface modification , inorganic chemistry , nanocomposite , electrospinning , carbon fibers , electrocatalyst , zeolitic imidazolate framework , nanotechnology , metal organic framework , chemistry , adsorption , electrode , electrochemistry , composite number , organic chemistry , composite material , polymer , scanning electron microscope , engineering
Non‐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 Fe 3 C/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.