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Sorbitol-plasticized chitosan/zeolite hybrid membrane for direct methanol fuel cell
Yuan, WK; Wu, H; Zheng, D; Zheng, XH; Jiang, ZY; Hao, XP; Wang, BY; Hao XP(郝小鹏); Wang BY(王宝义)
Corresponding AuthorTianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Key Lab Nucl Anal Tech, Beijing 100049, Peoples R China
AbstractOrganic-inorganic hybrid membranes, as promising direct methanol fuel cell membranes, have become a research focus in recent years. Wherein interfacial morphology, greatly influenced by the polymer chain flexibility and interfacial stress generated during membrane formation, is a critical determinant of efficient suppression of methanol crossover. In this study, a novel and feasible approach for rational fabrication of organic/inorganic hybrid direct methanol fuel cell (DMFC) membrane is tentatively explored. By adding plasticizer in the membrane casting solution and/or elevating solvent evaporation temperature during membrane fabrication, the glass transition temperature (Tg) and crystallinity of the chitosan/zeolitehybrid membrane are both remarkably decreased. In particular, the interface voids are substantially eliminated, generating a more desirable interfacial morphology and consequently leading to an improved performance in suppressing methanol crossover. The chitosan/mordenite/sorbitol hybrid membrane prepared with 30 wt% of sorbitol and 15 wt% of mordenite exhibits a 44% reduction in methanol permeability compared with chitosan control membrane. The variation of methanol permeability with mordenite and sorbital content is tentatively elucidated by the change of free volume cavity size in the membrane determined by positron annihilation lifetime spectroscopy (PALS) measurements. (c) 2007 Elsevier B.V. All rights reserved.
KeywordDMFC organic-inorganic hybrid membrane plasticizer interfacial morphology methanol crossover
Subject AreaElectrochemistry; Energy & Fuels
Indexed ByADS
WOS Research AreaElectrochemistry ; Energy & Fuels
WOS SubjectElectrochemistry ; Energy & Fuels
WOS IDWOS:000250654700013
ADS Bibcode2007JPS...172..604Y
ADS URLhttps://ui.adsabs.harvard.edu/abs/2007JPS...172..604Y
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2007JPS...172..604Y/citations
Citation statistics
Cited Times:45[WOS]   [WOS Record]     [Related Records in WOS]
Cited Times:12 [ADS]
Document Type期刊论文
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Yuan, WK,Wu, H,Zheng, D,et al. Sorbitol-plasticized chitosan/zeolite hybrid membrane for direct methanol fuel cell[J]. JOURNAL OF POWER SOURCES,2007,172(2):604-612.
APA Yuan, WK.,Wu, H.,Zheng, D.,Zheng, XH.,Jiang, ZY.,...&王宝义.(2007).Sorbitol-plasticized chitosan/zeolite hybrid membrane for direct methanol fuel cell.JOURNAL OF POWER SOURCES,172(2),604-612.
MLA Yuan, WK,et al."Sorbitol-plasticized chitosan/zeolite hybrid membrane for direct methanol fuel cell".JOURNAL OF POWER SOURCES 172.2(2007):604-612.
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