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DC Field | Value | Language |
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dc.citation.number | 2 | - |
dc.citation.startPage | 1802228 | - |
dc.citation.title | SMALL | - |
dc.citation.volume | 15 | - |
dc.contributor.author | Yang, Juchan | - |
dc.contributor.author | Kang, Dongwoo | - |
dc.contributor.author | Jeon, Yuju | - |
dc.contributor.author | Lee, Jong Hoon | - |
dc.contributor.author | Jeong, Hu Young | - |
dc.contributor.author | Shin, Hyeon Suk | - |
dc.contributor.author | Song, Hyun-Kon | - |
dc.date.accessioned | 2023-12-21T19:44:16Z | - |
dc.date.available | 2023-12-21T19:44:16Z | - |
dc.date.created | 2018-12-04 | - |
dc.date.issued | 2019-01 | - |
dc.description.abstract | An oxygen reduction reaction (ORR) catalyst/support system is designed to have Pt nanoparticles nanoconfined in a nanodimensionally limited space. Holey crumpled reduced graphene oxide plates (hCR-rGO) are used as a carbon support for Pt loading. As expected from interparticular Pt-to-Pt distance of Pt-loaded hCR-rGO longer than that of Pt/C (Pt-loaded carbon black as a practical Pt catalyst), the durability of ORR electroactivity along cycles is improved by replacing the widely used carbon black with hCR-rGO. Unexpected morphological changes of Pt are electrochemically induced during repeated ORR processes. Spherical multifaceted Pt particles are evolved to {110}-dominant dendritic multipods. Nanoconfinement of a limited number of Pt within a nanodimensionally limited space is responsible for the morphological changes. The improved durability observed from Pt-loaded hCR-rGO originates from 1) dendritic pod structure of Pt exposing more active sites to reactants and 2) highly ORR-active Pt {110} planes dominant on the surface. | - |
dc.identifier.bibliographicCitation | SMALL, v.15, no.2, pp.1802228 | - |
dc.identifier.doi | 10.1002/smll.201802228 | - |
dc.identifier.issn | 1613-6810 | - |
dc.identifier.scopusid | 2-s2.0-85055954220 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/25489 | - |
dc.identifier.url | https://onlinelibrary.wiley.com/doi/full/10.1002/smll.201802228 | - |
dc.identifier.wosid | 000455545800004 | - |
dc.language | 영어 | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Sphere-to-Multipod Transmorphic Change of Nanoconfined Pt Electrocatalyst during Oxygen Reduction Reaction | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter | - |
dc.relation.journalResearchArea | Chemistry; Science & Technology - Other Topics; Materials Science; Physics | - |
dc.description.journalRegisteredClass | scie | - |
dc.subject.keywordAuthor | confinement | - |
dc.subject.keywordAuthor | electrocatalyst | - |
dc.subject.keywordAuthor | holey graphene | - |
dc.subject.keywordAuthor | oxygen reduction | - |
dc.subject.keywordAuthor | stability | - |
dc.subject.keywordPlus | CATHODE CATALYST SUPPORT | - |
dc.subject.keywordPlus | PLATINUM NANOPARTICLES | - |
dc.subject.keywordPlus | METHANOL TOLERANCE | - |
dc.subject.keywordPlus | FUEL-CELLS | - |
dc.subject.keywordPlus | CARBON | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | GROWTH | - |
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