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Lee, Sang-Young
Energy Soft-Materials Lab (ESML)
Research Interests
  • Soft Materials for Energy Storage/ Conversion Systems

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Effect of silane hydrophilicity on membrane transport properties of in-situ hybrid Nafion/organically modified silicate proton conductors for DMFC applications

DC Field Value Language
dc.contributor.author So, Soon Yong ko
dc.contributor.author Kim, Sung Chu ko
dc.contributor.author Lee, Sang-Young ko
dc.date.available 2014-09-18T02:27:58Z -
dc.date.created 2014-09-17 ko
dc.date.issued 2010-06 -
dc.identifier.citation SOLID STATE IONICS, v.181, no.15-16, pp.714 - 718 ko
dc.identifier.issn 0167-2738 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/6185 -
dc.identifier.uri http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=77953549947 ko
dc.description.abstract In order to build a better understanding of in-situ hybrid Nafion/ORMOSIL (Organically MOdified SILicates) membranes for DMFC (direct methanol fuel cells) applications, we investigate the effect of silane hydrophilicity on membrane transport properties of the hybrid proton conductors in terms of water-channel structure and state of water. The following three contrast silanes are introduced in the decreasing order of hydrophilicity: tetraethoxy silane (TEOS), methyl triethoxy silane (MTES), and diethoxy dimethyl silane (DEDMS). To focus exclusively on the silane hydrophilicity, a pre-requisite condition assuring that the same concentration of silanes should be immersed into Nafion115 is fulfilled by examining the silane diffusion behavior. As the silane hydrophilicity increases, the water-channel size and water uptake of the hybrid membranes become larger but the number of freezable water molecules decreases. Meanwhile, the hybrid membranes prepared from the hydrophobic silanes show the higher proton conductivity, leading to the superior selectivity. This interesting transport behavior is explained by considering the morphological change and state of water in the hybrid membranes. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher ELSEVIER SCIENCE BV ko
dc.subject Direct methanol fuel cells ko
dc.subject Hydrophilicity ko
dc.subject In-situ hybridization ko
dc.subject Nafion ko
dc.subject Silane ko
dc.subject Silicates ko
dc.title Effect of silane hydrophilicity on membrane transport properties of in-situ hybrid Nafion/organically modified silicate proton conductors for DMFC applications ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-77953549947 ko
dc.identifier.wosid 000279377900008 ko
dc.type.rims ART ko
dc.description.wostc 6 *
dc.description.scopustc 6 *
dc.date.tcdate 2015-05-06 *
dc.date.scptcdate 2014-09-17 *
dc.identifier.doi 10.1016/j.ssi.2010.03.033 ko
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