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DC Field | Value | Language |
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dc.citation.endPage | 5043 | - |
dc.citation.number | 11 | - |
dc.citation.startPage | 5034 | - |
dc.citation.title | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.volume | 5 | - |
dc.contributor.author | Lee, Hyeon-Ji | - |
dc.contributor.author | Kim, Jung-Hwan | - |
dc.contributor.author | Won, Ji-Hye | - |
dc.contributor.author | Lim, Jun-Muk | - |
dc.contributor.author | Hong, Young Taik | - |
dc.contributor.author | Lee, Sang-Young | - |
dc.date.accessioned | 2023-12-22T03:46:31Z | - |
dc.date.available | 2023-12-22T03:46:31Z | - |
dc.date.created | 2013-08-27 | - |
dc.date.issued | 2013-06 | - |
dc.description.abstract | We demonstrate highly flexible, proton-conductive silicate glass electrolytes integrated with polyimide (PI) nonwoven fabrics (referred to as "b-SS glass electrolytes") for potential use in medium-temperature/ low-humidity proton exchange membrane fuel cells (PEMFCs). The b-SS glass electrolytes are fabricated via in situ sol-gel synthesis of 3-trihydroxysilyl-1-propanesulfonic acid (THPSA)/3-glycidyloxypropyl trimethoxysilane (GPTMS) mixtures inside PI nonwoven substrates that serve as a porous reinforcing framework. Owing to this structural uniqueness, the b-SS glass electrolytes provide noticeable improvements in mechanical bendability and membrane thickness, in comparison to typical bulk silicate glass electrolytes that are thick and easily fragile. Another salient feature of the b-SS glass electrolytes is the excellent proton conductivity at harsh measurement conditions of medium temperature/low humidity, which is highly important for PEMFC-powered electric vehicle applications. This beneficial performance is attributed to the presence of a highly interconnected, proton-conductive (THPSA/GPTMS-based) silicate glass matrix in the PI reinforcing framework. Notably, the b-SS glass electrolyte synthesized from THPSA/GPTMS = 9/1 (mol/mol) exhibits a higher proton conductivity than water-swollen sulfonated polymer electrolyte membranes (here, sulfonated poly(arylene ether sulfone) and Nafion are chosen as control samples). This intriguing behavior in the proton conductivity of the b-SS glass electrolytes is discussed in great detail by considering its structural novelty and Grotthuss mechanism-driven proton migration that is strongly affected by ion exchange capacity (IEC) values and also state of water. | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS & INTERFACES, v.5, no.11, pp.5034 - 5043 | - |
dc.identifier.doi | 10.1021/am400836h | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.scopusid | 2-s2.0-84879085110 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/4141 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84879085110 | - |
dc.identifier.wosid | 000320484000073 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Highly Flexible, Proton-Conductive Silicate Glass Electrolytes for Medium-Temperature/Low-Humidity Proton Exchange Membrane Fuel Cells | - |
dc.type | Article | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics; Materials Science | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | PEMFCs | - |
dc.subject.keywordAuthor | flexible silicate glass electrolytes | - |
dc.subject.keywordAuthor | polyimide nonwoven fabrics | - |
dc.subject.keywordAuthor | THPSA/GPTMS | - |
dc.subject.keywordAuthor | proton conductivity | - |
dc.subject.keywordAuthor | medium-temperature/low-humidity | - |
dc.subject.keywordPlus | LITHIUM ION BATTERIES | - |
dc.subject.keywordPlus | SOL-GEL PROCESS | - |
dc.subject.keywordPlus | WATER/VAPOR MANAGEMENT | - |
dc.subject.keywordPlus | POLYIMIDE NONWOVEN | - |
dc.subject.keywordPlus | POLYMER | - |
dc.subject.keywordPlus | STATE | - |
dc.subject.keywordPlus | ACID | - |
dc.subject.keywordPlus | PHOSPHOSILICATE | - |
dc.subject.keywordPlus | SYSTEMS | - |
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