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题名: Conductivity of aromatic-based proton exchange membranes at subzero temperatures
作者: Hou, Junbo1, 2;  Yu, Hongrnei1;  Wang, Liang1, 2;  Xing, Danmin1;  Hou, Zhongjun3;  Ming, Pingwen3;  Shao, Zhigang1;  Yi, Baolian1
通讯作者: 俞红梅
关键词: fuel cell ;  proton exchange membrane (PEM) ;  freeze ;  cold start ;  state of water
刊名: JOURNAL OF POWER SOURCES
发表日期: 2008-05-15
DOI: 10.1016/j.jpowsour.2008.01.052
卷: 180, 期:1, 页:232-237
收录类别: SCI
文章类型: Article
部门归属: 3
项目归属: 301
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Electrochemistry ;  Energy & Fuels
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.
关键词[WOS]: POLY(ARYLENE ETHER SULFONE) ;  ELECTROLYTE FUEL-CELL ;  WATER ;  NAFION ;  CONDUCTANCE ;  TRANSPORT ;  SYSTEMS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000256069900032
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/100523
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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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

Recommended Citation:
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.
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