Please use this identifier to cite or link to this item: https://doi.org/10.1021/acsmaterialslett.9b00052
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dc.titleMOF-Derived Carbon Networks with Atomically Dispersed Fe-N<inf>x</inf> Sites for Oxygen Reduction Reaction Catalysis in Acidic Media
dc.contributor.authorQian, Y
dc.contributor.authorLiu, Q
dc.contributor.authorSarnello, E
dc.contributor.authorTang, C
dc.contributor.authorCHNG MEI LIN (ZHUANG MEILIN)
dc.contributor.authorShui, J
dc.contributor.authorLi, T
dc.contributor.authorPennycook, SJ
dc.contributor.authorHan, M
dc.contributor.authorZhao Dan
dc.date.accessioned2020-06-10T01:42:49Z
dc.date.available2020-06-10T01:42:49Z
dc.date.issued2019-07-01
dc.identifier.citationQian, Y, Liu, Q, Sarnello, E, Tang, C, CHNG MEI LIN (ZHUANG MEILIN), Shui, J, Li, T, Pennycook, SJ, Han, M, Zhao Dan (2019-07-01). MOF-Derived Carbon Networks with Atomically Dispersed Fe-N<inf>x</inf> Sites for Oxygen Reduction Reaction Catalysis in Acidic Media. ACS Materials Letters 1 (1) : 37-43. ScholarBank@NUS Repository. https://doi.org/10.1021/acsmaterialslett.9b00052
dc.identifier.issn2639-4979
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/169576
dc.description.abstract© 2019 American Chemical Society. Proton exchange membrane fuel cell (PEMFC) is one of the most promising candidates for electrochemical energy conversion, but the requirement of expensive Pt-based catalysts on the cathodes prevents its large-scale application. Herein, we report the preparation of three-dimensional carbon networks with atomically dispersed Fe-N4 active sites (SA-3DNC) for oxygen reduction reaction (ORR) catalysis in the cathodes of PEMFCs. Derived from NaCl-assisted pyrolysis, the SA-3DNC has a continuous, micro-macroporous hierarchical morphology which is endowed by the modulator effect of the molten salt. In 0.1 M HClO4, the SA-3DNC has a 0.906 V onset potential for ORR, which is 30 mV more positive than that of commercial 20% Pt/C. After 10 »000 cycles of accelerated degradation, the half-wave potential of SA-3DNC only drops 38 mV, compared to 125 mV of the Pt/C. Furthermore, a single cell was assembled using the SA-3DNC as the cathodic catalyst, showing only a 20% current drop after a 20-h durability test at 0.5 V. Our study has demonstrated a facile way to prepare hierarchical, stable, and noble-metal-free electrocatalysts with atomically dispersed active sites for ORR catalysis in acidic media.
dc.publisherAmerican Chemical Society (ACS)
dc.sourceElements
dc.typeArticle
dc.date.updated2020-06-02T09:28:34Z
dc.contributor.departmentDEPT OF CHEMICAL & BIOMOLECULAR ENGG
dc.contributor.departmentDEPT OF MATERIALS SCIENCE & ENGINEERING
dc.description.doi10.1021/acsmaterialslett.9b00052
dc.description.sourcetitleACS Materials Letters
dc.description.volume1
dc.description.issue1
dc.description.page37-43
dc.published.statePublished
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