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学科主题: 物理化学
题名: Study on hydrophobicity loss of the gas diffusion layer in PEMFCs by electrochemical oxidation
作者: Yu, Shuchun1, 2;  Li, Xiaojin1;  Liu, Sa1, 2;  Hao, Jinkai1, 2;  Shao, Zhigang1;  Yi, Baolian1
通讯作者: 李晓锦 ;  邵志刚
刊名: RSC ADVANCES
发表日期: 2014
DOI: 10.1039/c3ra45770b
卷: 4, 期:8, 页:3852-3856
收录类别: SCI
合作性质: 
文章类型: Article
部门归属: DNL03
项目归属: DNL0301
产权排名: 待补充
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
资助者: 1,1
研究领域[WOS]: Chemistry
英文摘要: The hydrophobicity loss of the gas diffusion layer (GDL) in proton exchange membrane fuel cells (PEMFCs) was investigated by an accelerated stress test of electrochemical oxidation at a constant potential. The fresh and oxidized GDLs were characterized by cyclic voltammetry, contact angle measurements and water permeability. Results showed the occurrence of the oxidation of carbon and the decrease of the hydrophobicity of GDL. To discuss the reasons for the hydrophobicity loss, scanning electron microscopy, X-ray photoelectron spectroscopy and thermogravimetry were analyzed. It was found that the hydrophobicity loss was closely associated with the losses of the carbon materials and polytetrafluoroethylene (PTFE) in GDL under test conditions. In addition, the mass loss of carbon materials was more than that of PTFE.
关键词[WOS]: COMPOSITE CARBON-BLACK ;  FUEL-CELL PERFORMANCE ;  MICRO-POROUS LAYER ;  WATER TRANSPORT ;  DEGRADATION ;  DURABILITY ;  GDL
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000329040500022
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/119710
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.Univ Chinese Acad Sci, Beijing 100039, Peoples R China

Recommended Citation:
Yu, Shuchun,Li, Xiaojin,Liu, Sa,et al. Study on hydrophobicity loss of the gas diffusion layer in PEMFCs by electrochemical oxidation[J]. RSC ADVANCES,2014,4(8):3852-3856.
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