DC Field | Value | Language |
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dc.contributor.author | Mun, Yeongdong | - |
dc.contributor.author | LEE, SEONG GYU | - |
dc.contributor.author | KIM, KYEOUNGHAK | - |
dc.contributor.author | KIM, SEONGBEEN | - |
dc.contributor.author | LEE, SEUNGHYUN | - |
dc.contributor.author | HAN, JEONG WOO | - |
dc.contributor.author | LEE, JIN WOO | - |
dc.date.accessioned | 2019-04-24T00:30:08Z | - |
dc.date.available | 2019-04-24T00:30:08Z | - |
dc.date.created | 2019-04-17 | - |
dc.date.issued | 2019-04 | - |
dc.identifier.issn | 0002-7863 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/98664 | - |
dc.description.abstract | Replacement of Pt-based oxygen reduction reaction (ORR) catalysts with non-precious metal catalysts (NPMCs) such as Fe/N/C is one of the most important issues in the commercialization of proton exchange membrane fuel cells (PEMFCs). Despite numerous studies on Fe/N/C catalysts, a fundamental study on the development of a versatile strategy is still required for tuning the kinetic activity of a single Fe-N-4 site. Herein, we report a new and intuitive design strategy for tuning and enhancing the kinetic activity of a single Fe-N-4 site by controlling electron-withdrawing/donating properties of a carbon plane with the incorporation of sulfur functionalities. The effect of electron-withdrawing/donating functionalities was elucidated by experimentation and theoretical calculations. Finally, the introduction of an oxidized sulfur functionality decreases the d-band center of iron by withdrawing electrons, thereby facilitating ORR at the Fe-N-4 site by lowering the intermediate adsorption energy. Furthermore, this strategy can enhance ORR. activity without a decrease in the stability of the catalyst. This simple and straightforward approach can be a cornerstone to develop optimum NPMCs for application in the cathodes of PEMFCs. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.relation.isPartOf | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | - |
dc.title | Versatile Strategy for Tuning ORR Activity of a Single Fe-N-4 Site by Controlling Electron-Withdrawing/Donating Properties of a Carbon Plane | - |
dc.type | Article | - |
dc.identifier.doi | 10.1021/jacs.8b13543 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.141, no.15, pp.6254 - 6262 | - |
dc.identifier.wosid | 000465188800021 | - |
dc.citation.endPage | 6262 | - |
dc.citation.number | 15 | - |
dc.citation.startPage | 6254 | - |
dc.citation.title | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | - |
dc.citation.volume | 141 | - |
dc.contributor.affiliatedAuthor | LEE, SEONG GYU | - |
dc.contributor.affiliatedAuthor | KIM, KYEOUNGHAK | - |
dc.contributor.affiliatedAuthor | KIM, SEONGBEEN | - |
dc.contributor.affiliatedAuthor | LEE, SEUNGHYUN | - |
dc.contributor.affiliatedAuthor | HAN, JEONG WOO | - |
dc.contributor.affiliatedAuthor | LEE, JIN WOO | - |
dc.identifier.scopusid | 2-s2.0-85064339361 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | OXYGEN REDUCTION REACTION | - |
dc.subject.keywordPlus | NITROGEN-DOPED CARBON | - |
dc.subject.keywordPlus | DENSITY-FUNCTIONAL THEORY | - |
dc.subject.keywordPlus | FE/N/C-CATALYSTS | - |
dc.subject.keywordPlus | POROUS CARBON | - |
dc.subject.keywordPlus | PHYSICOCHEMICAL PROPERTIES | - |
dc.subject.keywordPlus | METAL CATALYST | - |
dc.subject.keywordPlus | FE | - |
dc.subject.keywordPlus | GRAPHENE | - |
dc.subject.keywordPlus | IRON | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
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