Conductivity of aromatic-based proton exchange membranes at subzero temperatures

	Conductivity of aromatic-based proton exchange membranes at subzero temperatures
	Hou, Junbo 1,2; Yu, Hongrnei 1; Wang, Liang 1,2; Xing, Danmin 1; Hou, Zhongjun 3; Ming, Pingwen 3; Shao, Zhigang 1; Yi, Baolian 1
刊名	journal of power sources
	2008-05-15
卷号	180 期号:1 页码:232-237
关键词	fuel cell proton exchange membrane (PEM) freeze cold start state of water
通讯作者	俞红梅
产权排序	1;1
英文摘要	stable proton exchange membrane (pem) with good proton conductivity at subzero temperatures is important for the development of pem fuel cell cold start. in this work, subfreezing conductivity was reported for several aromatic-based pems including sulfonated polyimides (spis) with three values of ion-exchange capacity (iec), sulfortated poly(ether ether ketone) (speek) and disulfonated poly(arylene ether sulfone) copolymer (spsu) as well as nafion (r) 212. measurements were performed using the electrochemical impedance spectroscopy (eis) technique. the results showed that only fully hydrated speek (iec, 1.75) and spsu (iec, 2.08) had comparable conductivities with nafion (r) 212 at subzero temperatures. considering implement of gas purge before subzero storage of pem fuel cell, the conductivity for those pems humidified by water vapor at activity of 0.75 was also investigated. the state of water in aromatic-based pems was quantified by differential scanning calorimetry (dsc), and its correlation with conductivity of the membrane was also discussed. (c) 2008 elsevier b.v. all rights reserved.
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	electrochemistry ; energy & fuels
研究领域[WOS]	electrochemistry ; energy & fuels
关键词[WOS]	poly(arylene ether sulfone) ; electrolyte fuel-cell ; water ; nafion ; conductance ; transport ; systems
收录类别	SCI
原文出处	true
语种	英语
WOS记录号	WOS:000256069900032
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/100523]
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, Fuel Cell R&D Ctr, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Sch, Dalian 100039, Peoples R China 3.Sunrise Power Co Ltd, Dalian 116025, Peoples R China
推荐引用方式 GB/T 7714	Hou, Junbo,Yu, Hongrnei,Wang, Liang,et al. Conductivity of aromatic-based proton exchange membranes at subzero temperatures[J]. journal of power sources,2008,180(1):232-237.
APA	Hou, Junbo.,Yu, Hongrnei.,Wang, Liang.,Xing, Danmin.,Hou, Zhongjun.,...&Yi, Baolian.(2008).Conductivity of aromatic-based proton exchange membranes at subzero temperatures.journal of power sources,180(1),232-237.
MLA	Hou, Junbo,et al."Conductivity of aromatic-based proton exchange membranes at subzero temperatures".journal of power sources 180.1(2008):232-237.