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dc.contributor.author유원철-
dc.date.accessioned2019-05-02T04:38:32Z-
dc.date.available2019-05-02T04:38:32Z-
dc.date.issued2017-02-
dc.identifier.citationJOURNAL OF MATERIALS CHEMISTRY A, v. 5, No. 8, Page. 4199-4206en_US
dc.identifier.issn2050-7488-
dc.identifier.issn2050-7496-
dc.identifier.urihttp://pubs.rsc.org/-/content/articlehtml/2017/ta/c6ta10679j-
dc.identifier.urihttp://repository.hanyang.ac.kr/handle/20.500.11754/103138-
dc.description.abstractThe microporous structure of Fe-N-doped carbon (Fe-N-C) catalysts plays a pivotal role in the oxygen reduction reaction (ORR) because the catalytically active N-coordinated Fe ion sites are located within accessible micropores (˂2 nm). However, the distinct role of carbon support microporosity in the formation of catalytic sites in Fe-N-C catalysts remains unclear. Here, we report the effect of the pre-defined microporosity of the parent carbon support on the catalytic site density resulting from Fe-N-C catalyst synthesis, and its ultimate effect on ORR activity. The porosity, pore size distribution, and specific surface area of the carbon supports are initially controlled by using hot CO2 treatment. Then, Fe and N are doped into these supports by precursor impregnation and subsequent pyrolysis. In the synthesized Fe-N-C catalysts, the more developed microporosity in the parent carbon supports facilitates more iron and nitrogen contents, especially pyridinic nitrogen, and Fe-N-Cs derived from carbon supports with higher microporosities show enhanced ORR activity, strongly suggesting that a high catalytic site density can be achieved by utilizing carbon supports with well-developed microporosities. The most active Fe-N-C catalyst prepared using our synthetic route exhibits ORR activity comparable to that of a commercial Pt-based catalyst in alkaline media.en_US
dc.description.sponsorshipThis work was supported by the Institute of Basic Science (IBS) in Republic of Korea (IBS-R006-G1), the basic science research program of the National Research Foundation of Korea (2016R1D1A1B03930258), and the Global Frontier R&D Program on Center for Multiscale Energy System funded by NRF (2016M3A6A7945505), the NRF grant funded by MSIP (2014R1A2A2A04003865).en_US
dc.language.isoen_USen_US
dc.publisherROYAL SOC CHEMISTRYen_US
dc.subjectELECTROLYTE FUEL-CELLSen_US
dc.subjectACTIVE-SITESen_US
dc.subjectCATHODE CATALYSTen_US
dc.subjectFE/N/C CATALYSTSen_US
dc.subjectELECTROCATALYSTSen_US
dc.subjectPERFORMANCEen_US
dc.subjectACIDen_US
dc.subjectELECTROREDUCTIONen_US
dc.subjectCHALLENGESen_US
dc.subjectSTABILITYen_US
dc.titleThe role of pre-defined microporosity in catalytic site formation for the oxygen reduction reaction in iron- and nitrogen-doped carbon materialsen_US
dc.typeArticleen_US
dc.relation.no8-
dc.relation.volume5-
dc.identifier.doi10.1039/c6ta10679j-
dc.relation.page4199-4206-
dc.relation.journalJOURNAL OF MATERIALS CHEMISTRY A-
dc.contributor.googleauthorKim, Minhyoung-
dc.contributor.googleauthorKim, Hee Soo-
dc.contributor.googleauthorYoo, Sung Jong-
dc.contributor.googleauthorYoo, Won Cheol-
dc.contributor.googleauthorSung, Yung-Eun-
dc.relation.code2017000065-
dc.sector.campusE-
dc.sector.daehakCOLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E]-
dc.sector.departmentDEPARTMENT OF CHEMICAL AND MOLECULAR ENGINEERING-
dc.identifier.pidwcyoo-


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