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题名: A Methanol Concentration Sensor Using Twin Membrane Electrode Assemblies for Direct Methanol Fuel Cells
作者: Sun, Wei1, 2;  Sun, Gongquan1;  Yang, Weiqian1, 2;  Yang, Shaohua1;  Xin, Qin1
通讯作者: 孙公权
关键词: Fuel cell ;  Sensor ;  Methanol concentration ;  Membrane electrode assembly (MEA)
刊名: INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
发表日期: 2006-08-01
卷: 1, 期:4, 页:160-170
收录类别: SCI
文章类型: Article
部门归属: 3
项目归属: 305
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Electrochemistry
研究领域[WOS]: Electrochemistry
英文摘要: A methanol concentration sensor based on twin Nafion membrane electrode assemblies (MEAs) was constructed with anodes face to face eliminating the interference of oxygen in environment. The signal of the sensor was obtained by electro-oxidation of the methanol crossing over Nafion membranes from cathodes. During operation, carbon dioxide as a product of methanol oxidation not only was expelled from the gaps between two MEAs, but also permeated across the membranes into the cathodes, which was confirmed by GC in the outflowing stream of the sensor. Electrochemical characterization shows that the sensor has good response performance with a concentration range up to 5M and the signal increases with temperature elevating. The slightly nonlinearity of the working curves was mainly caused by electro-osmotic effect confirmed by electro-osmotic drag coefficient. Though logarithm tendency degradation with 0.9% hr(-1) was observed from stability test, the performances in terms of high sensitivity to concentration with wide measuring range and signal recovery characteristics show that the sensor is promising for direct methanol fuel cells.
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000208126500002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/98301
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, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Dalian 116023, Peoples R China

Recommended Citation:
Sun, Wei,Sun, Gongquan,Yang, Weiqian,et al. A Methanol Concentration Sensor Using Twin Membrane Electrode Assemblies for Direct Methanol Fuel Cells[J]. INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,2006,1(4):160-170.
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