Large-scale synthesis of N-doped carbon capsules supporting atomically dispersed iron for efficient oxygen reduction reaction electrocatalysis

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dc.citation.issue2
dc.citation.volume2
dc.contributor.authorYang H
dc.contributor.authorLiu Y
dc.contributor.authorLiu X
dc.contributor.authorWang X
dc.contributor.authorTian H
dc.contributor.authorWaterhouse GIN
dc.contributor.authorKruger PE
dc.contributor.authorTelfer SG
dc.contributor.authorMa S
dc.date.accessioned2024-12-02T22:06:11Z
dc.date.available2024-12-02T22:06:11Z
dc.date.issued2022-05-17
dc.description.abstractThe large-scale synthesis of platinum-free electrocatalysts for the oxygen reduction reaction (ORR) remains a grand challenge. We report the large-scale production of stable and active ORR electrocatalysts based on iron, an earth-abundant element. A core–shell zeolitic imidazolate framework–tannic acid coordination polymer composite (ZIF-8@K-TA) was utilized as the catalyst precursor, which was transformed into iron atoms dispersed in hollow porous nitrogen-doped carbon capsules (H-Fe-Nx-C) through ion exchange and pyrolysis. H-Fe-Nx-C features site-isolated single-atom iron centers coordinated to nitrogen in graphitic layers, high levels of nitrogen doping, and high permeability to incoming gases. Benefiting from these characteristics, H-Fe-Nx-C demonstrated efficient electrocatalytic activity (E1/2 ​= ​0.92 ​V, vs. RHE) and stability towards the ORR in both alkaline and acidic media. In ORR performance, it surpassed the majority of recently reported Fe-N-C catalysts and the standard Pt/C catalyst. In addition, H-Fe-Nx-C showed outstanding tolerance to methanol.
dc.description.confidentialfalse
dc.edition.editionMarch 2022
dc.format.pagination227-234
dc.identifier.citationYang H, Liu Y, Liu X, Wang X, Tian H, Waterhouse GIN, Kruger PE, Telfer SG, Ma S. (2022). Large-scale synthesis of N-doped carbon capsules supporting atomically dispersed iron for efficient oxygen reduction reaction electrocatalysis. eScience. 2. 2. (pp. 227-234).
dc.identifier.doi10.1016/j.esci.2022.02.005
dc.identifier.eissn2667-1417
dc.identifier.elements-typejournal-article
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/72147
dc.languageEnglish
dc.publisherElsevier B.V. on behalf of Nankai University
dc.publisher.urihttps://www.sciencedirect.com/science/article/pii/S2667141722000143
dc.relation.isPartOfeScience
dc.rights(c) The author/sen
dc.rights.licenseCC BY-NC-NDen
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectMetal single atoms
dc.subjectHollow carbon capsules
dc.subjectOxygen reduction reaction
dc.subjectMetal–organic framework
dc.subjectElectrocatalysis
dc.titleLarge-scale synthesis of N-doped carbon capsules supporting atomically dispersed iron for efficient oxygen reduction reaction electrocatalysis
dc.typeJournal article
pubs.elements-id461315
pubs.organisational-groupOther
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