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Maximizing the Active Site Densities of Single-Atomic Fe-N-C Electrocatalysts for High-Performance Anion Membrane Fuel Cells

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dc.contributor.authorSubin Park-
dc.contributor.authorMin Her-
dc.contributor.authorHeejong Shin-
dc.contributor.authorWonchan Hwang-
dc.contributor.authorYung-Eun Sung-
dc.date.accessioned2021-07-12T06:50:16Z-
dc.date.accessioned2021-07-12T06:50:16Z-
dc.date.available2021-07-12T06:50:16Z-
dc.date.available2021-07-12T06:50:16Z-
dc.date.created2021-03-11-
dc.date.issued2021-02-
dc.identifier.issn2574-0962-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/9942-
dc.description.abstractIron- and nitrogen-doped carbon (Fe-N-C) catalysts have received significant attention owing to their high oxygen reduction reaction (ORR) activities, which are comparable to those of state-of-the-art Pt/C catalysts. This high ORR activity originates from the atomically dispersed Fe coordinated with the nitrogen atom (Fe-N-x) active site. Increasing the Fe-N-x active site density can enhance the ORR activity. In this study, we suggest a facile and effective method for maximizing the active site densities using a simple ZnCl2 activation method. ZnCl2 activation was applied to the metal organic framework-derived Fe-N-C catalyst that exhibits superior ORR activity compared to Pt/C and a recently reported nonprecious metal catalyst. Through various electrochemical analyses, we confirmed that this activity originates from the effectively increased active site density. The anion-exchange membrane fuel cell (AEMFC) performance was measured to confirm practical applicability, and we obtained a significantly high performance of 1076 mA cm(-2) at 0.6 V, which is significantly higher than the currently reported performance of carbon-based Fe-N-C AEMFC cathode catalysts. We demonstrate the potential of our strategy for applications in various carbon-based materials that can be used for the development of high-efficiency electrochemical energy devices.-
dc.description.uri1-
dc.language영어-
dc.publisherAMER CHEMICAL SOC-
dc.titleMaximizing the Active Site Densities of Single-Atomic Fe-N-C Electrocatalysts for High-Performance Anion Membrane Fuel Cells-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000621660800044-
dc.identifier.scopusid2-s2.0-85100988180-
dc.identifier.rimsid75018-
dc.contributor.affiliatedAuthorSubin Park-
dc.contributor.affiliatedAuthorMin Her-
dc.contributor.affiliatedAuthorHeejong Shin-
dc.contributor.affiliatedAuthorWonchan Hwang-
dc.contributor.affiliatedAuthorYung-Eun Sung-
dc.identifier.doi10.1021/acsaem.0c02650-
dc.identifier.bibliographicCitationACS APPLIED ENERGY MATERIALS, v.4, no.2, pp.1459 - 1466-
dc.citation.titleACS APPLIED ENERGY MATERIALS-
dc.citation.volume4-
dc.citation.number2-
dc.citation.startPage1459-
dc.citation.endPage1466-
dc.description.journalClass1-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.relation.journalWebOfScienceCategoryChemistry, Physical-
dc.relation.journalWebOfScienceCategoryEnergy & Fuels-
dc.relation.journalWebOfScienceCategoryMaterials Science, Multidisciplinary-
dc.subject.keywordAuthornonprecious metal catalyst-
dc.subject.keywordAuthorZnCl2 activation-
dc.subject.keywordAuthoractive site density-
dc.subject.keywordAuthoroxygen reduction reaction-
dc.subject.keywordAuthoranion-exchange membrane fuel cell-
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > 1. Journal Papers (저널논문)
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