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Lee, Sang-Young
Energy Soft-Materials Lab.
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dc.citation.endPage 37 -
dc.citation.number 1 -
dc.citation.startPage 30 -
dc.citation.title SOLID STATE IONICS -
dc.citation.volume 190 -
dc.contributor.author Seol, Jong-Heon -
dc.contributor.author Won, Ji-Hye -
dc.contributor.author Yoon, Kyung-Suk -
dc.contributor.author Hong, Young Taik -
dc.contributor.author Lee, Sang-Young -
dc.date.accessioned 2023-12-22T06:11:04Z -
dc.date.available 2023-12-22T06:11:04Z -
dc.date.created 2014-09-17 -
dc.date.issued 2011-05 -
dc.description.abstract We demonstrate a new reinforcing porous substrate for a proton-conducting composite membrane targeting proton exchange membrane fuel cells (PEMFC) applications. This porous substrate is based on hygroscopic SiO2 nanoparticles-coated poly(paraphenylene terephthalamide) (PPTA) nonwovens. The SiO2 nanoparticles (530 nm), which are interconnected by tetraethoxy silane (TEOS)-based silicate binders, play a crucial role in improving mechanical properties, hydrophilicity, and water retention capability of the substrate. The PPTA nonwoven serves as a support layer offering flexibility and toughness to the substrate. The SiO2 nanoparticles-coated PPTA nonwoven substrate is subsequently impregnated with sulfonated poly(arylene ether sulfone) (SPAES, degree of sulfonation = 49.3%) that acts as a proton-conducting electrolyte. In comparison to a pristine SPAES membrane, the porous substrate-reinforced SPAES composite membrane presents the substantially improved dimensional change, and more intriguingly, is effective in suppressing the steep decline of proton conductivity at a low humidity condition of 30 °C/50% RH. -
dc.identifier.bibliographicCitation SOLID STATE IONICS, v.190, no.1, pp.30 - 37 -
dc.identifier.doi 10.1016/j.ssi.2011.03.015 -
dc.identifier.issn 0167-2738 -
dc.identifier.scopusid 2-s2.0-79956062129 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/6152 -
dc.identifier.url http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=79956062129 -
dc.identifier.wosid 000291847400005 -
dc.language 영어 -
dc.publisher ELSEVIER SCIENCE BV -
dc.title SiO2 nanoparticles-coated poly(paraphenylene terephthalamide) nonwovens as reinforcing porous substrates for proton-conducting, sulfonated poly(arylene ether sulfone)-impregnated composite membranes -
dc.type Article -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -

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