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


SiO2 ceramic nanoporous substrate-reinforced sulfonated poly(arylene ether sulfone) composite membranes for proton exchange membrane fuel cells

DC Field Value Language Seol, Jong-Heon ko Won, Ji-Hye ko Yoon, Kyung-Suk ko Hong, Young Taik ko Lee, Sang-Young ko 2014-09-18T02:26:45Z - 2014-09-17 ko 2012-04 -
dc.identifier.citation INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.37, no.7, pp.6189 - 6198 ko
dc.identifier.issn 0360-3199 ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.abstract Porous substrate-reinforced composite membranes have been extensively investigated due to their promising application to proton exchange membrane fuel cells (PEMFC). In this study, we develop a new ceramic-based reinforcing porous substrate, which consists of hygroscopic silica (SiO2) nanoparticles interconnected by 3-glycidoxypropyltrimethoxysilane (GPTMS)-based silicate binders and a poly(paraphenylene terephthalamide) (PPTA) nonwoven support. This unusual ceramic substrate is featured with the strong mechanical strength, well-developed nanoporous structure (i.e., nanosized interstitial voids formed between the close-packed SiO2 nanoparticles), high hydrophilicity, and more notably, good water retention capability. The nanostructured pores of the ceramic substrate are subsequently impregnated with sulfonated poly(arylene ether sulfone) (SPAES, degree of sulfonation = 49.3%). In comparison to a pristine SPAES membrane, the ceramic substrate-reinforced SPAES composite membrane offers the significantly improved dimensional change and also effectively mitigates the steep decline of proton conductivity at low humidity conditions, which is further discussed by considering the state of water in the reinforced composite membrane. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.subject poly(paraphenylene terephthalamide) nonwoven ko
dc.subject Proton conductivity ko
dc.subject Proton exchange membrane fuel cells ko
dc.subject Reinforced composite membranes ko
dc.subject SiO 2 ceramic nanoporous substrates ko
dc.subject Sulfonated poly(arylene ether sulfone) ko
dc.title SiO2 ceramic nanoporous substrate-reinforced sulfonated poly(arylene ether sulfone) composite membranes for proton exchange membrane fuel cells ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84858290570 ko
dc.identifier.wosid 000303284000080 ko
dc.type.rims ART ko
dc.description.wostc 8 *
dc.description.scopustc 6 * 2015-05-06 * 2014-09-17 *
dc.identifier.doi 10.1016/j.ijhydene.2011.06.085 ko
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