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dc.contributor.authorZong, L
dc.contributor.authorChen, X
dc.contributor.authorLiu, S
dc.contributor.authorFan, K
dc.contributor.authorDou, S
dc.contributor.authorXu, J
dc.contributor.authorZhao, X
dc.contributor.authorZhang, W
dc.contributor.authorZhang, Y
dc.contributor.authorWu, W
dc.contributor.authorLu, F
dc.contributor.authorCui, L
dc.contributor.authorJia, X
dc.contributor.authorZhang, Q
dc.contributor.authorYang, Y
dc.contributor.authorZhao, J
dc.contributor.authorLi, X
dc.contributor.authorDeng, Y
dc.contributor.authorChen, Y
dc.contributor.authorWang, L
dc.description.abstractEfficient bifunctional oxygen electrocatalysts for ORR and OER are fundamental to the development of high performance metal-air batteries. Herein, a facile cost-efficient two-step pyrolysis strategy for the fabrication of a bifunctional oxygen electrocatalyst has been proposed. The efficient non-precious-metal-based electrocatalyst, Fe/Fe3C@Fe-Nx-C consists of highly curved onion-like carbon shells that encapsulate Fe/Fe3C nanoparticles, distributed on an extensively porous graphitic carbon aerogel. The obtained Fe/Fe3C@Fe-Nx-C aerogel exhibited superb electrochemical activity, excellent durability, and high methanol tolerance. The experimental results indicated that the assembly of onion-like carbon shells with encapsulated Fe/Fe3C yielded highly curved carbon surfaces with abundant Fe-Nx active sites, a porous structure, and enhanced electrocatalytic activity towards ORR and OER, hence displaying promising potential for application as an air cathode in rechargeable Zn-air batteries. The constructed Zn-air battery possessed an exceptional peak power density of ~147 mW cm−2, outstanding cycling stability (200 cycles, 1 h per cycle), and a small voltage gap of 0.87 V. This study offers valuable insights regarding the construction of low-cost and highly active bifunctional oxygen electrocatalysts for efficient air batteries.
dc.publisherElsevier BV
dc.relation.ispartofjournalJournal of Energy Chemistry
dc.subject.fieldofresearchInorganic chemistry
dc.titleUltrafine Fe/Fe3C decorated on Fe-Nx-C as bifunctional oxygen electrocatalysts for efficient Zn-air batteries
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationZong, L; Chen, X; Liu, S; Fan, K; Dou, S; Xu, J; Zhao, X; Zhang, W; Zhang, Y; Wu, W; Lu, F; Cui, L; Jia, X; Zhang, Q; Yang, Y; Zhao, J; Li, X; Deng, Y; Chen, Y; Wang, L, Ultrafine Fe/Fe3C decorated on Fe-Nx-C as bifunctional oxygen electrocatalysts for efficient Zn-air batteries, Journal of Energy Chemistry, 2021, 56, pp. 72-79
gro.hasfulltextNo Full Text
gro.griffith.authorFan, Kaicai

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