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题名: Analysis of the behavior and degradation in proton exchange membrane fuel cells with a dead-ended anode
作者: Yu, Jianliang1;  Jiang, Zuwei1;  Hou, Ming2;  Liang, Dong3;  Xiao, Yu2;  Dou, Meiling2, 4;  Shao, Zhigang2;  Yi, Baolian2
关键词: Proton exchange membrane fuel cell ;  Hydrogen depleted region ;  Dead-ended anode ;  Current distribution ;  Local potential
刊名: JOURNAL OF POWER SOURCES
发表日期: 2014-01-15
DOI: 10.1016/j.jpowsour.2013.06.163
卷: 246, 页:90-94
收录类别: SCI
文章类型: Article
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: Proton exchange membrane fuel cells (PEMFCs) with a dead-ended anode (DEA) can obtain high hydrogen utilization by a comparatively simple system. Nevertheless, the accumulation of the nitrogen and the water in the anode channels can lead to a local fuel starvation, which degrades the performance and durability of PEMFCs. In this paper, the behaviors of PEMFCs with a DEA are explored experimentally by detecting the current distribution and the local potentials. The results indicate that the current distribution is uneven during the DEA operation. The local current firstly decreases at the region near the anode outlet, and then extends to the inlet region along the channels with time. The complete fuel starvation near the anode outlet leads to a high local potential and carbon corrosion on the cathode side. The SEM images of the cathode electrode reveal that the significant thickness reduction and the collapse of the electrode's porous structure happen in the cathode catalyst layer, leading to the irreversible decline of the performance. The comparison of the experiments with different oxidants and fuels reveals that the nitrogen crossover from cathode to anode is the dominant factor on the performance decline under the DEA operations. (C) 2013 Elsevier B.V. All rights reserved.
关键词[WOS]: CARBON CORROSION ;  STARVATION ;  PEMFC
语种: 英语
WOS记录号: WOS:000326661100013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145876
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.Dalian Univ Technol, Sch Chem Machinery, Dalian 116024, Liaoning, Peoples R China
2.Chinese Acad Sci, Fuel Cell Syst & Engn Lab, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
3.Sunrise Power Co Ltd, Dalian 116085, Peoples R China
4.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Yu, Jianliang,Jiang, Zuwei,Hou, Ming,et al. Analysis of the behavior and degradation in proton exchange membrane fuel cells with a dead-ended anode[J]. JOURNAL OF POWER SOURCES,2014,246:90-94.
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