Ni3Fe/Ni3Fe(OOH)x dynamically coupled on wood-derived nitrogen doped carbon as a bifunctional electrocatalyst for rechargeable zinc–air batteries

Advances in rechargeable zinc–air batteries are hindered by the lack of efficient and economical oxygen electrocatalysts. Herein, a monolithic bifunctional catalyst is rationally constructed via an in situ growth of a FeNi3 alloy on nitrogen-doped wood-derived carbon (FeNi3@NWC). FeNi3 alloy nanopar...

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Published inJournal of materials chemistry. A, Materials for energy and sustainability Vol. 11; no. 4; pp. 1894 - 1905
Main Authors Wang, Yi, Liu, Yanyan, Zhou, Limin, Zhang, Pengxiang, Wu, Xianli, Liu, Tao, Sehrish Mehdi, Guo, Xianji, Jiang, Jianchun, Li, Baojun
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 24.01.2023
Subjects
Activated carbon
Batteries
Carbon
Catalysts
Catalytic activity
Charge transfer
Chemical reduction
Electrocatalysts
Energy storage
Intermetallic compounds
Iron compounds
Metal air batteries
Nanoalloys
Nanoparticles
Nickel base alloys
Nickel compounds
Nitrogen
Oxygen
Oxygen evolution reactions
Oxygen reduction reactions
Rechargeable batteries
Zinc
Zinc-oxygen batteries
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Summary:Advances in rechargeable zinc–air batteries are hindered by the lack of efficient and economical oxygen electrocatalysts. Herein, a monolithic bifunctional catalyst is rationally constructed via an in situ growth of a FeNi3 alloy on nitrogen-doped wood-derived carbon (FeNi3@NWC). FeNi3 alloy nanoparticles coupled with nitrogen-doped carbon expedite the catalytic activity toward oxygen reduction reaction (ORR) by promoting proton generation on FeNi3 and transfer to nitrogen-doped carbon. The actual formation of Ni1–xFexOOH on the surface of the FeNi3 alloy effectively accelerates oxygen evolution reaction (OER) via the charge transfer with outstanding activity. The potential gap of only 0.68 V between ORR and OER of FeNi3@NWC is achieved. The liquid zinc–air batteries (ZABs) with FeNi3@NWC convey a robust lifetime of ∼266 h (800 cycles) with stable charging and discharging. Theoretical calculations manifest that the construction of double active sites through a synergistic mechanism between the FeNi3 alloy and catalytically active carbon ignites the prominent catalytic activity with superior stability. This work provides remarkable inspiration for the rational design of biomass-derived efficient electrocatalysts and will facilitate the practical application of energy storage and conversion devices.
ISSN:2050-7488
2050-7496
DOI:10.1039/d2ta09269g