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dc.citation.endPage 364 -
dc.citation.startPage 354 -
dc.citation.title CARBON -
dc.citation.volume 72 -
dc.contributor.author Kim, Nam-In -
dc.contributor.author Cheon, Jae Yeong -
dc.contributor.author Kim, Jae Hyung -
dc.contributor.author Seong, Jinhae -
dc.contributor.author Park, Jun-Young -
dc.contributor.author Joo, Sang Hoon -
dc.contributor.author Kwon, Kyungjung -
dc.date.accessioned 2023-12-22T02:39:25Z -
dc.date.available 2023-12-22T02:39:25Z -
dc.date.created 2014-03-06 -
dc.date.issued 2014-06 -
dc.description.abstract Ordered mesoporous carbons (OMCs) are investigated as support materials for Pt catalysts for oxygen reduction reaction (ORR). Three types of OMCs (CMK-3, CMK-3G, and CMK-5) are prepared by a nanocasting method using ordered mesoporous silica, SBA-15, as a template. These OMCs with the same hexagonal mesostructure have different carbon frameworks and graphiticity, which can affect their surface area and microporosity. Pt nanoparticles with an average size of 1 nm are uniformly supported on the three OMCs and Ketjenblack� and their electrochemical performance and durability are evaluated. Pt/CMK-3G exhibits the highest electrochemically active surface area, kinetic current density, mass activity, and half-wave potential, whereas Pt/CMK-3 shows the lowest values. Pt/CMK-3G also shows the highest ORR activity after an accelerated durability test, with a minimal shift in half-wave potential. The higher ORR activity of Pt/CMK-3G is attributed to the formation of highly crystalline Pt particles as well as its highly graphitic, crystalline carbon structure, which causes the weak adsorption of surface oxide and a strong interaction between the Pt particles and the support. Moreover, we can establish that the mass activity of the catalysts is nearly inversely proportional to the micropore volume of the carbon supports. -
dc.identifier.bibliographicCitation CARBON, v.72, pp.354 - 364 -
dc.identifier.doi 10.1016/j.carbon.2014.02.023 -
dc.identifier.issn 0008-6223 -
dc.identifier.scopusid 2-s2.0-84900606030 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/4232 -
dc.identifier.url http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84900606030 -
dc.identifier.wosid 000334010600041 -
dc.language 영어 -
dc.publisher PERGAMON-ELSEVIER SCIENCE LTD -
dc.title Impact of framework structure of ordered mesoporous carbons on the performance of supported Pt catalysts for oxygen reduction reaction -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Chemistry, Physical; Materials Science, Multidisciplinary -
dc.relation.journalResearchArea Chemistry; Materials Science -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -

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