Designed Iron Single Atom Catalysts for Highly Efficient Oxygen Reduction Reaction in Alkaline and Acid Media

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dc.contributor.authorZhao, S.
dc.contributor.authorZhang, L.
dc.contributor.authorJohannessen, B.
dc.contributor.authorSaunders, M.
dc.contributor.authorLiu, C.
dc.contributor.authorYang, S.
dc.contributor.authorJiang, S.P.
dc.date.issued2021
dc.descriptionPublished online: December 3, 2020
dc.description.abstractSingle atom catalysts (SACs) have attracted much attentions due to their advantages of high catalysis efficiency and excellent selectivity. However, for industrial applications, synthesis of SACs in large and practical quantities is very important. The challenge is to develop synthesis methods with controllability and scalability. Herein, a well-characterized and scalable method is demonstrated to synthesize atomically dispersed iron atoms coordinated with nitrogen on graphene, SAFe @ NG, with high atomic loading (≈4.6 wt%) through a one-pot pyrolysis process. The method is scalable for the fabrication of Fe SACs with high quantities. The Fe–N–G catalyst exhibits high intrinsic oxygen reduction reaction (ORR) performance, reaching half potential of 0.876 and 0.702 V in alkaline and acidic solutions, respectively, with excellent microstructure stability. Furthermore, the density functional theory (DFT) simulation confirms that the Fe atoms in coordination with four nitrogen atoms, FeN4, in graphene is the active center for the 4-electron ORR process. This work demonstrates an efficient design pathway for single atom catalysts as highly active and stable electrocatalysts for high-performance ORR applications.
dc.description.statementofresponsibilityShiyong Zhao, Lianji Zhang, Bernt Johannessen, Martin Saunders, Chang Liu, Shi-Ze Yang, and San Ping Jiang
dc.identifier.citationAdvanced Materials Interfaces, 2021; 8(8):2001788-1-2001788-8
dc.identifier.doi10.1002/admi.202001788
dc.identifier.issn2196-7350
dc.identifier.issn2196-7350
dc.identifier.orcidZhao, S. [0000-0002-6235-3704]
dc.identifier.urihttps://hdl.handle.net/2440/134668
dc.language.isoen
dc.publisherWiley
dc.relation.granthttp://purl.org/au-research/grants/arc/DP180100568
dc.relation.granthttp://purl.org/au-research/grants/arc/DP180100731
dc.relation.granthttp://purl.org/au-research/grants/arc/LE120100026
dc.rights© 2020 Wiley-VCH GmbH
dc.source.urihttps://doi.org/10.1002/admi.202001788
dc.subjectcontrollable and scalable synthesis; Fe single-atom catalysts; FeN4 active center; oxygen reduction reaction
dc.titleDesigned Iron Single Atom Catalysts for Highly Efficient Oxygen Reduction Reaction in Alkaline and Acid Media
dc.typeJournal article
pubs.publication-statusPublished

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