Modification of Nafion membrane using interfacial polymerization for vanadium redox flow battery applications

	Modification of Nafion membrane using interfacial polymerization for vanadium redox flow battery applications
	Luo, Qingtao 1,2; Zhang, Huaming 1; Chen, Jian 1; Qian, Peng 1,2; Zhai, Yunfeng 1,2
刊名	journal of membrane science
	2008-03-20
卷号	311 期号:1-2 页码:98-103
关键词	vanadium redox flow battery interfacial polymerization membrane modification self-discharge phenomena
通讯作者	张华民
产权排序	1;1
英文摘要	in order to reduce the permeation of vanadium ions across the ion exchange membrane during the operation of vanadium redox flow battery (vrb) based on nation membrane, the interfacial polymerization was applied to form a cationic charged layer on the surface of nation 117 membrane. the area resistance and the permeability of vanadium ions were measured. the results indicate that comparing with the unmodified nation membrane, the modification of nation membrane results in a dramatic reduction in crossover of vanadium ions across the membrane and a little higher area resistance of the membrane. as a result, the columbic efficiency for the vrb single cell based on the modified nation membrane(vrb-modified nafion), which is related to the concentration of the incubation solution of polyethylenimine (pei), was increased significantly. the value is 96.2-97.3%, which is higher than that obtained with the vrb single cell based on unmodified nafion membrane(vrb-nafion) (around 93.8%). due to the little higher area resistance caused by the modification, the voltage efficiency of vrb-modified nafion is lower than that of vrb-nafion. furthermore, the water transfer across the modified membrane was also reduced. the ion exchange capacity (iec) of the modified nation membrane was also evaluated. the formation of the thin cationic charged layer on the membrane surface was confirmed by ir spectra analysis. (c) 2007 elsevier b.v. all rights reserved.
WOS标题词	science & technology ; technology ; physical sciences
类目[WOS]	engineering, chemical ; polymer science
研究领域[WOS]	engineering ; polymer science
关键词[WOS]	cation-exchange membranes ; electrodialysis ; separator ; transport ; ions
收录类别	SCI
原文出处	true
语种	英语
WOS记录号	WOS:000254324800011
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/100455]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Lab PEMFC Key Mat & Technol, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Luo, Qingtao,Zhang, Huaming,Chen, Jian,et al. Modification of Nafion membrane using interfacial polymerization for vanadium redox flow battery applications[J]. journal of membrane science,2008,311(1-2):98-103.
APA	Luo, Qingtao,Zhang, Huaming,Chen, Jian,Qian, Peng,&Zhai, Yunfeng.(2008).Modification of Nafion membrane using interfacial polymerization for vanadium redox flow battery applications.journal of membrane science,311(1-2),98-103.
MLA	Luo, Qingtao,et al."Modification of Nafion membrane using interfacial polymerization for vanadium redox flow battery applications".journal of membrane science 311.1-2(2008):98-103.