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DC Field | Value | Language |
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dc.citation.endPage | 310 | - |
dc.citation.startPage | 304 | - |
dc.citation.title | NANO ENERGY | - |
dc.citation.volume | 44 | - |
dc.contributor.author | Mahmood, Javeed | - |
dc.contributor.author | Li, Feng | - |
dc.contributor.author | Kim, Changmin | - |
dc.contributor.author | Choi, Hyun-Jung | - |
dc.contributor.author | Gwon, Ohhun | - |
dc.contributor.author | Jung, Sun-Min | - |
dc.contributor.author | Seo, Jeong-Min | - |
dc.contributor.author | Cho, Sung-Jung | - |
dc.contributor.author | Ju, Young-Wan | - |
dc.contributor.author | Jeong, Hu-Young | - |
dc.contributor.author | Kim, Guntae | - |
dc.contributor.author | Baek, Jong-Beom | - |
dc.date.accessioned | 2023-12-21T21:11:10Z | - |
dc.date.available | 2023-12-21T21:11:10Z | - |
dc.date.created | 2018-01-02 | - |
dc.date.issued | 2018-02 | - |
dc.description.abstract | Converting unstable earth-abundant group VIIIB transition metals into stable catalysts with high oxygen reduction reaction (ORR) performances remains a critical challenge for electrochemical technologies. Iron (Fe)-nitrogen (N)-carbon (C)-based electrocatalysts have recently demonstrated ORR performances comparable to platinum (Pt)-based catalysts. However, as their poor stability remains a critical issue, which needs to be resolved to satisfy commercial requirements. Here, we describe a methodology for preparing a high-performance and stable Fe-based ORR catalyst. The catalyst was obtained by the in-situ sandwiching of a Fe3+ precursor in a nitrogenated holey two-dimensional network (denoted as C2N). Reduction of the sandwiched Fe3+ results in the formation of Fe oxide (FexOy) nanoparticles, which are simultaneously transformed into highly crystalline Fe0 nanoparticle cores, while the C2N is catalysed into well-defined, encapsulating, nitrogenated graphitic shells (Fe@C2N nanoparticles) during heat-treatment. The resultant Fe0@C2N nanoparticles are uniformly distributed on the C2N substrate, becoming the Fe@C2N catalyst, which displayed ORR activities superior to commercial Pt/C in both acidic and alkaline media. Furthermore, the Fe@C2N catalyst remained rust-free during harsh electrochemical testing even after 650 h, suggesting that its unusual durability originates from indirect-contact electrocatalysis. | - |
dc.identifier.bibliographicCitation | NANO ENERGY, v.44, pp.304 - 310 | - |
dc.identifier.doi | 10.1016/j.nanoen.2017.11.057 | - |
dc.identifier.issn | 2211-2855 | - |
dc.identifier.scopusid | 2-s2.0-85038033171 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/23138 | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S2211285517307449 | - |
dc.identifier.wosid | 000419833900035 | - |
dc.language | 영어 | - |
dc.publisher | Elsevier BV | - |
dc.title | Fe@C2N: A highly-efficient indirect-contact oxygen reduction catalyst | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied | - |
dc.relation.journalResearchArea | Chemistry; Science & Technology - Other Topics; Materials Science; Physics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | C2N | - |
dc.subject.keywordAuthor | Fe electrocatalyst | - |
dc.subject.keywordAuthor | Fe@C2N | - |
dc.subject.keywordAuthor | Encapsulation | - |
dc.subject.keywordAuthor | Indirect-contact | - |
dc.subject.keywordAuthor | ORR | - |
dc.subject.keywordAuthor | Stability | - |
dc.subject.keywordPlus | HIGH ELECTROCATALYTIC ACTIVITY | - |
dc.subject.keywordPlus | ELECTROLYTE FUEL-CELLS | - |
dc.subject.keywordPlus | IRON NANOPARTICLES | - |
dc.subject.keywordPlus | AIR BATTERIES | - |
dc.subject.keywordPlus | METAL | - |
dc.subject.keywordPlus | CARBON | - |
dc.subject.keywordPlus | ARRAYS | - |
dc.subject.keywordPlus | LAYERS | - |
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