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DC Field | Value | Language |
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dc.citation.endPage | 8015 | - |
dc.citation.number | 27 | - |
dc.citation.startPage | 8007 | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 1 | - |
dc.contributor.author | Youn, Duck Hyun | - |
dc.contributor.author | Bae, Ganghong | - |
dc.contributor.author | Han, Suenghoon | - |
dc.contributor.author | Kim, Jae Young | - |
dc.contributor.author | Jang, Ji-Wook | - |
dc.contributor.author | Park, Hunmin | - |
dc.contributor.author | Choi, Sun Hee | - |
dc.contributor.author | Lee, Jae Sung | - |
dc.date.accessioned | 2023-12-22T03:42:50Z | - |
dc.date.available | 2023-12-22T03:42:50Z | - |
dc.date.created | 2013-08-20 | - |
dc.date.issued | 2013-07 | - |
dc.description.abstract | Transition metal nitrides of group 4-6 (Mo2N, W2N, NbN, Ta3N5, and TiN) were synthesized by the urea-glass route and screened for oxygen reduction reaction (ORR) electrodes in PEMFCs. In terms of electrochemical stability and activity, TiN was selected as the most promising candidate as a catalyst for ORR. To further enhance the activity for ORR, TiN was modified with nanostructured carbon supports including CNTs, graphene (GR), and CNT-GR hybrid. The obtained nanocarbon-supported TiN catalysts exhibited small particle sizes of TiN (<7 nm) and a good TiN-support interaction with reduced aggregation and no free-standing TiN particles away from the supports compared to bare TiN. In particular, TiN supported on the CNT-GR hybrid (TiN/CNT-GR) showed greatly enhanced ORR activity than bare TiN and other supported TiN catalysts. It exhibited a high onset potential (0.83 V) and the highest current density among the reported nitride-based electrocatalysts. The enhancement was ascribed to a synergistic effect between TiN nanoparticles (NPs) and CNT-GR hybird support, roles of which were to provide active sites for ORR and a facile electron pathway to NPs, respectively. Besides, TiN/CNT-GR exhibited large mesopores that could allow easy access of the electrolyte due to the formation of a 3-D CNT-GR structure assembled between 2-D graphene and 1-D CNTs. Further, it showed an excellent methanol tolerance compared to the commercial Pt/C catalyst. Thus, our TiN/CNT-GR could be a promising ORR electrocatalyst for PEMFCs and DMFCs. | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.1, no.27, pp.8007 - 8015 | - |
dc.identifier.doi | 10.1039/c3ta11135k | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.scopusid | 2-s2.0-84880174539 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/2629 | - |
dc.identifier.url | https://pubs.rsc.org/en/Content/ArticleLanding/2013/TA/c3ta11135k#!divAbstract | - |
dc.identifier.wosid | 000320551200023 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | A highly efficient transition metal nitride-based electrocatalyst for oxygen reduction reaction: TiN on a CNT-graphene hybrid support | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Energy & Fuels; Materials Science | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | CARBON NANOTUBE COMPOSITE | - |
dc.subject.keywordPlus | ELECTROLYTE FUEL-CELL | - |
dc.subject.keywordPlus | HIGH-ENERGY DENSITY | - |
dc.subject.keywordPlus | NONNOBLE ELECTROCATALYST | - |
dc.subject.keywordPlus | TITANIUM NITRIDE | - |
dc.subject.keywordPlus | GRAPHITE OXIDE | - |
dc.subject.keywordPlus | CATALYSTS | - |
dc.subject.keywordPlus | ALLOY | - |
dc.subject.keywordPlus | ARRAYS | - |
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