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dc.contributor.authorWang, Zheen_US
dc.contributor.authorAng, Jiamingen_US
dc.contributor.authorZhang, Boweien_US
dc.contributor.authorZhang, Youfangen_US
dc.contributor.authorMa, Daphne Xiu Yunen_US
dc.contributor.authorYan, Taoen_US
dc.contributor.authorLiu, Jianen_US
dc.contributor.authorChe, Boyangen_US
dc.contributor.authorHuang, Yizhongen_US
dc.contributor.authorLu, Xuehongen_US
dc.identifier.citationWang, Z., Ang, J., Zhang, B., Zhang, Y., Ma, D. X. Y., Yan, T., Liu, J., Che, B., Huang, Y. & Lu, X. (2019). FeCo/FeCoNi/N-doped carbon nanotubes grafted polyhedron-derived hybrid fibers as bifunctional oxygen electrocatalysts for durable rechargeable zinc–air battery. Applied Catalysis B: Environmental, 254, 26-36.
dc.description.abstractThe rational design and exploration of highly efficient, low-cost, and robust electrocatalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is critical for development of rechargeable metal-air batteries. Herein, we report a novel approach for the synthesis of bifunctional electrocatalysts, where Fe0.5Co0.5 and Fe0.5Co0.4Ni0.1 alloys are encapsulated in the nitrogen-doped carbon nanotubes-grafted porous polyhedron-derived hybrid fibers (FeCo/FeCoNi@NCNTs-HF). Benefiting from its hierarchically porous structure and strong synergetic coupling among FeCo, FeCoNi alloys, and N-doped carbon species. The obtained electrocatalyst exhibits a positive half-wave potential of 0.850 V for ORR and a low potential of 1.608 V to achieve a current density of 10 mA cm−2 for OER, as well as superior stability in alkaline media. As a demonstration, FeCo/FeCoNi@NCNTs-HF is employed as the electrocatalysts in the air cathode of a Zn-air battery, which shows superior discharge and charge performance, large power density, high specific capacity, and outstanding cycling stability of 240 h (360 cycles). More impressively, excellent cyclabilitiy with a lifetime of 670 h (1005 cycles) is also achieved by the Zn-air battery with FeCo/FeCoNi@NCNTs-HF as the self-supported air electrode. This work will open a novel avenue to develop advanced bifunctional electrocatalysts for the next generation of metal-air batteries.en_US
dc.description.sponsorshipAgency for Science, Technology and Research (A*STAR)en_US
dc.description.sponsorshipNanyang Technological Universityen_US
dc.relation.ispartofApplied Catalysis B: Environmentalen_US
dc.rights© 2019 Elsevier B.V. All rights reserved.en_US
dc.titleFeCo/FeCoNi/N-doped carbon nanotubes grafted polyhedron-derived hybrid fibers as bifunctional oxygen electrocatalysts for durable rechargeable zinc–air batteryen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.subject.keywordsHybrid Porous Carbon Fiberen_US
dc.subject.keywordsBifunctional Oxygen Electrocatalystsen_US
dc.description.acknowledgementThis work was supported by the Agency for Science, Technology and Research and Nanyang Technological University, Singapore for providing funding and PhD scholarships.en_US
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