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DC Field | Value | Language |
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dc.citation.endPage | 6885 | - |
dc.citation.number | 8 | - |
dc.citation.startPage | 6880 | - |
dc.citation.title | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | - |
dc.citation.volume | 37 | - |
dc.contributor.author | You, Dae Jong | - |
dc.contributor.author | Kwon, Kyungjung | - |
dc.contributor.author | Joo, Sang Hoon | - |
dc.contributor.author | Kim, Jin Hoe | - |
dc.contributor.author | Kim, Ji Man | - |
dc.contributor.author | Pak, Chanho | - |
dc.contributor.author | Chang, Hyuk | - |
dc.date.accessioned | 2023-12-22T05:13:20Z | - |
dc.date.available | 2023-12-22T05:13:20Z | - |
dc.date.created | 2013-06-10 | - |
dc.date.issued | 2012-04 | - |
dc.description.abstract | Carbon-supported Pt nanoparticle catalysts with ultra-high loading up to 85% are prepared by multi-step reduction (Pt/C-nR), in which additional Pt precursors are reduced upon a preformed Pt/C catalyst (Pt/C-1R). Transmission electron microscopy images show that the Pt/C-nR catalysts are composed of multilayers of Pt nanoparticles. The multiply stacked morphology in the Pt/C-nR catalysts may originate from the local overgrowth of additionally reduced Pt nanoparticles on the pre-existing Pt nanoparticles in the Pt/C-1R catalyst rather than conformal growth. The electrochemical characterizations by cyclic voltammograms in HClO4 solution reveal that Pt/C-2R catalyst exhibits an increased Pt utilization over the Pt/C-1R catalyst of the same Pt loading on the carbon support where a significant portion of catalytically active surfaces are buried within micropores of carbons. Furthermore, a direct methanol fuel cell (DMFC) single cell employing Pt/C-2R catalyst exhibits an enhanced DMFC performance compared to a single cell using the Pt/C-1R catalyst, demonstrating the importance of morphological control of Pt nanoparticles that can improve the catalyst utilization. | - |
dc.identifier.bibliographicCitation | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.37, no.8, pp.6880 - 6885 | - |
dc.identifier.doi | 10.1016/j.ijhydene.2012.01.103 | - |
dc.identifier.issn | 0360-3199 | - |
dc.identifier.scopusid | 2-s2.0-84859219234 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/2993 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84859219234 | - |
dc.identifier.wosid | 000303952300060 | - |
dc.language | 영어 | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | Carbon-supported ultra-high loading Pt nanoparticle catalyst by controlled overgrowth of Pt: Improvement of Pt utilization leads to enhanced direct methanol fuel cell performance | - |
dc.type | Article | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Electrochemistry; Energy & Fuels | - |
dc.relation.journalResearchArea | Chemistry; Electrochemistry; Energy & Fuels | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Pt nanoparticle | - |
dc.subject.keywordAuthor | Ultra-high metal loading | - |
dc.subject.keywordAuthor | Multi-step reduction | - |
dc.subject.keywordAuthor | Catalyst utilization | - |
dc.subject.keywordAuthor | Direct methanol fuel cell | - |
dc.subject.keywordPlus | ELECTROCATALYTIC ACTIVITY | - |
dc.subject.keywordPlus | OXYGEN REDUCTION | - |
dc.subject.keywordPlus | CATHODE CATALYST | - |
dc.subject.keywordPlus | POLYOL SYNTHESIS | - |
dc.subject.keywordPlus | PARTICLE-SIZE | - |
dc.subject.keywordPlus | PLATINUM | - |
dc.subject.keywordPlus | OXIDATION | - |
dc.subject.keywordPlus | ELECTROLYTE | - |
dc.subject.keywordPlus | ACID | - |
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