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Effect of zeolites on chitosan/zeolite hybrid membranes for direct methanol fuel cell
Wang, JT; Zheng, XH; Wu, H; Zheng, B; Jiang, ZY; Hao XP(郝小鹏); Wang BY(王宝义); Hao, XP; Wang, BY
2008
发表期刊JOURNAL OF POWER SOURCES
卷号178期号:1页码:9-19
通讯作者Jiang, ZY (reprint author), Tianjin Univ, Key Lab Green Chem Technol, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China.
摘要Zeolites including 3A, 4A, 5A, 13X, mordenite, and HZSM-5 were incorporated into chitosan (CS) matrix to fabricate the hybrid membranes for direct methanol fuel cell (DMFC). Due to the presence of hydrogen bonds between CS and zeolite, the hybrid membranes displayed desirable thermal and mechanical stabilities. Through free volume characteristics analysis by positron annihilation lifetime spectroscopy (PALS) technique, it was found that incorporation of hydrophilic zeolites would increase the free volume cavity size whereas incorporation of hydrophobic zeolites would decrease the free volume cavity size. Through the investigations on water/methanol uptake, swelling, and methanol permeability, it was found that the membrane performance was highly dependent on the zeolite particle and pore size, content, and hydrophilic/hydrophobic nature. Based on the solution-diffusion mechanism, it was found that incorporation of hydrophobic zeolites increased the diffusion resistance of methanol and consequently decreased the methanol permeability, whereas incorporation of hydrophilic zeolites decreased the diffusion resistance of methanol and consequently increased the methanol permeability. Moreover, under the identical conditions, all the as-prepared membranes exhibited much lower methanol permeability than Nafion (R) 117 while the proton conductivity of the membranes remained high enough for DMFC applications. (C) 2007 Elsevier B.V. All rights reserved.
文章类型Article
关键词chitosan zeolite hybrid membrane free volume characteristics methanol permeability proton conductivity
学科领域Electrochemistry; Energy & Fuels
DOI10.1016/j.jpowsour.2007.12.063
收录类别SCI
WOS类目Electrochemistry ; Energy & Fuels
WOS记录号WOS:000254215000002
引用统计
被引频次:67[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/311005/225475
专题多学科研究中心
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GB/T 7714
Wang, JT,Zheng, XH,Wu, H,et al. Effect of zeolites on chitosan/zeolite hybrid membranes for direct methanol fuel cell[J]. JOURNAL OF POWER SOURCES,2008,178(1):9-19.
APA Wang, JT.,Zheng, XH.,Wu, H.,Zheng, B.,Jiang, ZY.,...&Wang, BY.(2008).Effect of zeolites on chitosan/zeolite hybrid membranes for direct methanol fuel cell.JOURNAL OF POWER SOURCES,178(1),9-19.
MLA Wang, JT,et al."Effect of zeolites on chitosan/zeolite hybrid membranes for direct methanol fuel cell".JOURNAL OF POWER SOURCES 178.1(2008):9-19.
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