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


Multilayer-structured, SiO2/sulfonated poly(phenylsulfone) composite membranes for proton exchange membrane fuel cells

DC Field Value Language Lee, Jung-Ran ko Won, Ji-Hye ko Yoon, Kyung-Suk ko Hong, Young Taik ko Lee, Sang-Young ko 2014-09-18T02:26:46Z - 2014-09-17 ko 2012-04 -
dc.identifier.citation INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.37, no.7, pp.6182 - 6188 ko
dc.identifier.issn 0360-3199 ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.abstract In an effort to improve the dimensional change and proton conductivity of sulfonated poly(phenylsulfone) (SPPSU) membranes and facilitate their application to proton exchange membrane fuel cells (PEMFC), we develop a new composite membrane featured with a multilayer structure. The multilayer structure consists of a SPPSU-impregnated SiO 2 ceramic layer and a SPPSU layer. In contrast to a bulk composite membrane containing randomly dispersed SiO 2 nanoparticles, this unusual multilayer-structured composite membrane has an independent ceramic layer comprising close-packed SiO 2 nanoparticles and polyetherimide (PEI) binders. On the basis of structural characterization of the composite membranes, the effects of the multilayer structure on the membrane properties are investigated. The introduction of the SiO 2 ceramic layer is found to be effective in not only suppressing dimensional change but also enhancing proton conductivity of the multilayered composite membrane. Another intriguing finding is that the decrease of proton conductivity at a low humidity condition encountered in conventional water-swollen membranes is retarded in the multilayered composite membrane. These improvements in the proton conductivity of the multilayered composite membrane are discussed by considering the morphological uniqueness and the water retention capability of hygroscopic SiO 2 nanoparticles. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.subject Dimensional change ko
dc.subject Multilayer-structured composite membranes ko
dc.subject Proton conductivity ko
dc.subject Proton exchange membrane fuel cells ko
dc.subject Silica ko
dc.subject Sulfonated poly(phenylsulfone) ko
dc.title Multilayer-structured, SiO2/sulfonated poly(phenylsulfone) composite membranes for proton exchange membrane fuel cells ko
dc.type ARTICLE ko
dc.identifier.wosid 000303284000079 ko
dc.type.rims ART ko
dc.description.wostc 6 *
dc.description.scopustc 3 * 2015-05-06 * 2014-09-17 *
dc.identifier.doi 10.1016/j.ijhydene.2011.07.085 ko
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