dc.citation.conferencePlace |
KO |
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dc.citation.conferencePlace |
부산, 벡스코 |
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dc.citation.title |
2016 Fall Korean Chemical Society Meeting |
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dc.contributor.author |
Kim, Jae Hyung |
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dc.contributor.author |
Sa, Young Jin |
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dc.contributor.author |
Joo, Sang Hoon |
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dc.date.accessioned |
2023-12-19T20:07:01Z |
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dc.date.available |
2023-12-19T20:07:01Z |
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dc.date.created |
2017-01-08 |
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dc.date.issued |
2016-10-14 |
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dc.description.abstract |
Iron and nitrogen co-doped carbons (Fe-N/C) have emerged as promising non-precious metal catalysts for replacing Pt-based catalysts for oxygen reduction reaction (ORR). While Fe-Nx sites have been widely accepted as active sites for Fe-N/C catalysts, very recently, iron and/or iron carbide encased with carbon shells (Fe-Fe3C@C) has been suggested as a new active site for the ORR. However, most of synthetic routes to Fe-N/C catalysts involve high-temperature pyrolysis, which unavoidably yield both Fe-Nx and Fe-Fe3C@C species, hampering the identification of exclusive role of each species. In this work, in order to establish the respective roles of Fe-Nx and Fe-Fe3C@C sites we rationally designed new model catalysts via phase conversion method from Fe3O4 nanoparticles supported on carbon nanotubes. It was revealed that Fe-Nx sites dominantly catalyze the ORR with 4-electron pathway, exerting a major role for the high ORR performance, whereas Fe-Fe3C@C sites mainly promote 2-electron reduction of oxygen and sequential peroxide reduction (2 × 2 oxygen reduction), playing an auxiliary role for the ORR. |
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dc.identifier.bibliographicCitation |
2016 Fall Korean Chemical Society Meeting |
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dc.identifier.uri |
https://scholarworks.unist.ac.kr/handle/201301/40184 |
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dc.identifier.url |
http://new.kcsnet.or.kr/?mid=abstract_view&uid=36784&page=1&qpage=&word=%EC%A3%BC%EC%83%81%ED%9B%88&wordfield=authorsub&main_number=118 |
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dc.language |
영어 |
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dc.publisher |
대한화학회 |
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dc.title |
Investigating the Roles of Fe-Nx and Fe-Fe3C@C Species in Fe-N/C Oxygen Reduction Electrocatalysts |
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dc.type |
Conference Paper |
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dc.date.conferenceDate |
2016-10-12 |
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