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DC Field | Value | Language |
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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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