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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)
2007
发表期刊JOURNAL OF POWER SOURCES
卷号172期号:2页码:604-612
通讯作者Tianjin 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
摘要Organic-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.
文章类型Article
关键词DMFC organic-inorganic hybrid membrane plasticizer interfacial morphology methanol crossover
学科领域Electrochemistry; Energy & Fuels
研究领域[WOS]Electrochemistry ; Energy & Fuels
DOI10.1016/j.jpowsour.2007.05.040
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语种英语
WOS类目Electrochemistry ; Energy & Fuels
WOS记录号WOS:000250654700013
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被引频次:37[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/238088
专题多学科研究中心
作者单位中国科学院高能物理研究所
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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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