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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
Source PublicationJOURNAL OF POWER SOURCES
Volume178Issue:1Pages:9-19
Corresponding AuthorJiang, ZY (reprint author), Tianjin Univ, Key Lab Green Chem Technol, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China.
SubtypeArticle
AbstractZeolites 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.
Keywordchitosan zeolite hybrid membrane free volume characteristics methanol permeability proton conductivity
Subject AreaElectrochemistry; Energy & Fuels
DOI10.1016/j.jpowsour.2007.12.063
Indexed BySCI ; ADS
WOS SubjectElectrochemistry ; Energy & Fuels
WOS IDWOS:000254215000002
ADS Bibcode2008JPS...178....9W
ADS URLhttps://ui.adsabs.harvard.edu/abs/2008JPS...178....9W
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2008JPS...178....9W/citations
Citation statistics
Cited Times:20 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/225475
Collection多学科研究中心
Recommended Citation
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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