Effect of zeolites on chitosan/zeolite hybrid membranes for direct methanol fuel cell

	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
刊名	JOURNAL OF POWER SOURCES
	2008
卷号	178 期号:1 页码:9-19
关键词	chitosan zeolite hybrid membrane free volume characteristics methanol permeability proton conductivity
通讯作者	Jiang, ZY (reprint author), Tianjin Univ, Key Lab Green Chem Technol, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China.
英文摘要	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.
学科主题	Electrochemistry; Energy & Fuels
类目[WOS]	Electrochemistry ; Energy & Fuels
收录类别	SCI
WOS记录号	WOS:000254215000002
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/225475]
专题	高能物理研究所_多学科研究中心
推荐引用方式 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.