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Lee, Seung Geol
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dc.citation.endPage 4628 -
dc.citation.number 5 -
dc.citation.startPage 4619 -
dc.citation.title ACS APPLIED ENERGY MATERIALS -
dc.citation.volume 3 -
dc.contributor.author Hyun, Jonghyun -
dc.contributor.author Doo, Gisu -
dc.contributor.author Yuk, Seongmin -
dc.contributor.author Lee, Dong-Hyun -
dc.contributor.author Lee, Dong Wook -
dc.contributor.author Choi, Sungyu -
dc.contributor.author Kwen, Jiyun -
dc.contributor.author Kang, Haisu -
dc.contributor.author Tenne, Reshef -
dc.contributor.author Lee, Seung Geol -
dc.contributor.author Kim, Hee-Tak -
dc.date.accessioned 2024-03-20T10:35:09Z -
dc.date.available 2024-03-20T10:35:09Z -
dc.date.created 2024-03-20 -
dc.date.issued 2020-05 -
dc.description.abstract Proton exchange membranes with high through-plane proton conductivity are a critical component of high-performance fuel cells, electrolyzers, and batteries. However, isotropically distributed proton-conducting channel structures of current membranes present a limitation. Herein, a proton exchange membrane with straight proton-conducting channels aligned in the thickness direction is fabricated, achieved by magnetic field-induced alignment of proton-conductive, paramagnetic, and one-dimensional (1D) tungsten disulfide nanotubes (pms-WS2) distributed in a perfluorinated sulfonic acid (Nafion) membrane. The pms-WS2 nanotubes feature straight WS2 nanotubes as a core, a polystyrenesulfonate (PSS) skin layer, and surface-decorated Fe3O4 nanoparticles. A molecular dynamics simulation suggests that straight proton-conducting channels are constructed at the interface of Nafion/pms-WS2 due to densely populated sulfonic acids. Spectroscopic investigation and magnetization measurements verify the through-plane alignment of pms-WS2 under a weak through-plane magnetic field (0.035 T) during the removal of solvent from the membrane cast. Compared with a recast Nafion membrane with the same thickness, the through-plane aligned composite membrane exhibits 69% higher proton conductivity and 51% higher power performance in a proton exchange membrane fuel cell, demonstrating its efficacy. The through-plane alignment of a proton-conductive inorganic 1D material promises improved power performance of advanced electrochemical devices. -
dc.identifier.bibliographicCitation ACS APPLIED ENERGY MATERIALS, v.3, no.5, pp.4619 - 4628 -
dc.identifier.doi 10.1021/acsaem.0c00289 -
dc.identifier.issn 2574-0962 -
dc.identifier.scopusid 2-s2.0-85087971280 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/81705 -
dc.identifier.wosid 000537656400063 -
dc.language 영어 -
dc.publisher AMER CHEMICAL SOC -
dc.title Magnetic Field-Induced Through-Plane Alignment of the Proton Highway in a Proton Exchange Membrane -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary -
dc.relation.journalResearchArea Chemistry; Energy & Fuels; Materials Science -
dc.type.docType Article -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordAuthor Magnetic alignments -
dc.subject.keywordAuthor tungsten disulfides -
dc.subject.keywordAuthor proton conduction -
dc.subject.keywordAuthor proton exchange membrane fuel cells -
dc.subject.keywordAuthor composite membranes -
dc.subject.keywordPlus CARBON NANOTUBES -
dc.subject.keywordPlus COMPOSITE MEMBRANES -
dc.subject.keywordPlus MOLECULAR-DYNAMICS -
dc.subject.keywordPlus FORCE-FIELD -
dc.subject.keywordPlus FUEL-CELLS -
dc.subject.keywordPlus NAFION -
dc.subject.keywordPlus NANOPARTICLES -
dc.subject.keywordPlus CONDUCTIVITY -
dc.subject.keywordPlus PERFORMANCE -
dc.subject.keywordPlus TRANSPORT -

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