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学科主题: 物理化学
题名: Study on hydrophobicity degradation of gas diffusion layer in proton exchange membrane fuel cells
作者: Yu, Shuchun1, 2;  Li, Xiaojin1;  Li, Jin1, 2;  Liu, Sa1, 2;  Lu, Wangting1, 2;  Shao, Zhigang1;  Yi, Baolian1
通讯作者: 李晓锦 ;  邵志刚
关键词: Proton exchange membrane fuel cell ;  Gas diffusion layer ;  Hydrophobicity degradation ;  Performance
刊名: ENERGY CONVERSION AND MANAGEMENT
发表日期: 2013-12-01
DOI: 10.1016/j.enconman.2013.07.034
卷: 76, 页:301-306
收录类别: SCI
文章类型: Article
部门归属: DNL03
项目归属: DNL0301
产权排名: 1,1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Thermodynamics ;  Energy & Fuels ;  Mechanics ;  Physics, Nuclear
研究领域[WOS]: Thermodynamics ;  Energy & Fuels ;  Mechanics ;  Physics
英文摘要: As one of the essential components of proton exchange membrane fuel cell (PEMFC), gas diffusion layer (GDL) is of importance on water management, as well on the performance and durability of PEMFC. In this paper, the hydrophobicity degradation of GDL was investigated by immersing it in the 1.0 mol L-1 H2SO4 solution saturated by air for 1200 h. From the measurements of contact angle and water permeability, the hydrophobic characteristics of the pristine and immersed GDLs were compared. To investigate the causes for hydrophobicity degradation, the GDLs were analyzed by scanning electron microscopy, X-ray photoelectron spectroscopy and thermogravimetry. Further, the chemical compositions of H2SO4 solutions before and after immersion test were analyzed with infrared spectroscopy. Results showed that the hydrophobicity of immersed GDL decreased distinctly, which was caused by the damage of physical structure and surface characteristics. Moreover, the immersed GDL showed a worse fuel cell performance than the pristine GDL, especially under a low humidity condition. (C) 2013 Published by Elsevier Ltd.
关键词[WOS]: LIQUID WATER TRANSPORT ;  PERFORMANCE ;  DURABILITY ;  PEMFC ;  GDL ;  MICROSTRUCTURE ;  POWER
语种: 英语
WOS记录号: WOS:000327576800032
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/117648
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,Li, Jin,et al. Study on hydrophobicity degradation of gas diffusion layer in proton exchange membrane fuel cells[J]. ENERGY CONVERSION AND MANAGEMENT,2013,76:301-306.
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