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题名: Effect of hydrophilic SiO2 additive in cathode catalyst layers on proton exchange membrane fuel cells
作者: Miao, Zhili1, 2;  Yu, Hongmei1;  Song, Wei1, 2;  Zhao, Dan1, 2;  Hao, Lixing1, 2;  Yi, Baolian1;  Shao, Zhigang1
通讯作者: 俞红梅
关键词: Proton exchange membrane fuel cell ;  Catalyst layer ;  SiO2 ;  Wettability ;  Low humidity
刊名: ELECTROCHEMISTRY COMMUNICATIONS
发表日期: 2009-04-01
DOI: 10.1016/j.elecom.2009.01.010
卷: 11, 期:4, 页:787-790
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
类目[WOS]: Electrochemistry
研究领域[WOS]: Electrochemistry
英文摘要: Hydrophilic nanosized SiO2 and sulfonated SiO2 particles were added to the cathode catalyst layer (CL) to improve the water wettability and the performance of a proton exchange membrane fuel cell (PEMFC) at low humidity. It was found that both nanosized SiO2 and sulfonated SiO2 additive improved the hydrophilicity of the cathode CL by the contact angle measurement. Contrary to nanosized SiO2, sulfonated SiO2 improved the conductivity of the cathode CL. Increased wettability of the cathode CL from SiO2 maintained fuel cell at hydration conditions. This phenomenon had a profound influence on electrode performance at low humidity. Since the sulfonic groups in sulfonated SiO2 improved the proton conductivity of the cathode CL, the cell with sulfonated SiO2 showed better performance. (C) 2009 Elsevier B.V. All rights reserved.
关键词[WOS]: SILICA ;  PEMFC
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000265341900018
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/101747
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, Lab Fuel Cell, Dalian 116023, Liaoning, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Miao, Zhili,Yu, Hongmei,Song, Wei,et al. Effect of hydrophilic SiO2 additive in cathode catalyst layers on proton exchange membrane fuel cells[J]. ELECTROCHEMISTRY COMMUNICATIONS,2009,11(4):787-790.
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