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学科主题: 物理化学
题名: Study of sulfur dioxide crossover in proton exchange membrane fuel cells
作者: Zhai, Junxiang1, 2;  Hou, Ming1;  Zhang, Huabing1, 2;  Zhou, Zhimin1, 2;  Fu, Jie1, 2;  Shao, Zhigang1;  Yi, Baolian1
通讯作者: 侯明 ;  邵志刚
关键词: Proton exchange membrane fuel cells ;  Sulfur dioxide ;  Crossover ;  Mechanism
刊名: JOURNAL OF POWER SOURCES
发表日期: 2011-03-15
DOI: 10.1016/j.jpowsour.2010.11.103
卷: 196, 期:6, 页:3172-3177
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
摘要: Study of sulfur dioxide crossover in proton exchange membrane fuel cells
研究领域[WOS]: Electrochemistry ;  Energy & Fuels
英文摘要: As one of the most deleterious impurities to proton exchange membrane fuel cells (PEMFCs), sulfur dioxide (SO(2)) in air can pass through the membrane from the cathode to the anode and poison the catalyst of the two electrodes. The phenomenon of SO(2) crossover is investigated electrochemically in this paper. The influences of SO(2) concentration, relative humidity, gas pressure and current density on SO(2) crossover are discussed. Experimental results reveal that the anode tends to be poisoned heavily with the increasing concentration of SO(2) in the cathode. The coverage of the anode catalyst by SO(2) permeating from the cathode enlarges with the decreasing relative humidity in the anode. The rate of SO(2) crossover from the anode to the cathode is promoted at high current density when SO(2) is directly introduced into the anode side instead of the cathode side, which can be ascribed to the electro-osmotic drag effect. Gas pressures show no obvious effects on SO(2) crossover. A co-permeation mechanism of SO(2) with water is deduced based on the overall analysis. (c) 2010 Elsevier B.V. All rights reserved.
关键词[WOS]: PT/VULCAN CARBON ELECTROCATALYSTS ;  OXYGEN REDUCTION REACTION ;  PEMFC PERFORMANCE ;  ANODE FUEL ;  CATHODE ;  CONTAMINATION ;  ELECTRODES ;  OXIDATION ;  H2S ;  CO
语种: 英语
WOS记录号: WOS:000287058800031
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/115445
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 Syst & Engn Lab, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Zhai, Junxiang,Hou, Ming,Zhang, Huabing,et al. Study of sulfur dioxide crossover in proton exchange membrane fuel cells[J]. JOURNAL OF POWER SOURCES,2011,196(6):3172-3177.
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