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题名: Fabrication and characterization of a PTFE-reinforced integral composite membrane for self-humidifying PEMFC
作者: Zhang, Yu;  Zhang, Huamin;  Zhu, Xiaobing;  Gang, Liu;  Bi, Cheng;  Liang, Yongmin
通讯作者: 张华民
关键词: self-humidifying membrane ;  proton exchange membrane fuel cell ;  PTFE-reinforcement ;  low-cost ;  degradation
刊名: JOURNAL OF POWER SOURCES
发表日期: 2007-03-20
DOI: 10.1016/j.jpowsour.2006.12.060
卷: 165, 期:2, 页:786-792
收录类别: SCI
文章类型: Article
部门归属: 3
项目归属: 303
产权排名: 1;1
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: A novel PTFE-reinforced self-humidifying membrane based on low-cost sulfonated poly (ether ether ketone) (SPEEK) resin was fabricated. In the membrane a base layer and a thin protective layer were bonded by porous polytetrafluoroethylene (PTFE) film. The base layer, which is composed of silicon oxide supported platinum catalyst (abbreviated as Pt-SiO2) dispersed in SPEEK resin, can suppress reactant crossover and achieve good membrane hydration due to the imbedded hygroscopic Pt-SiO2 catalysts. The thin protective layer, which constitutes of H2O2 decomposition catalyst Pt-SiO2 and high H2O2-tolerant Nafion resin, aims to prevent the SPEEK resin degradation by H2O2 produced at the cathode side by incomplete reduction of oxygen. The porous PTFE film tightly bonds with the SPEEK and the Nation resins to form an integral membrane and accordingly to avoid delamination of the two different resins. The self-humidifying membrane was characterized by TEM, SEM and EDS, etc. The self-humidifying membrane exhibits higher open circuit voltage (OCV) of 0.98 V and maximum power density value of 0.8 W cm(-2) than 0.94 V, 0.33 W cm(-2) of SPEEK/PTFE membrane under dry condition, respectively. The primary 250 h fuel cell durability experiment was conducted and suggested that this low-cost self-humidifying membrane was durable both on fuel cell performance and the membrane structure under fuel cell operation condition with dry H-2/O-2. (c) 2007 Elsevier B.V. All rights reserved.
关键词[WOS]: POLYMER ELECTROLYTE MEMBRANE ;  FUEL-CELL APPLICATIONS ;  CROSSOVER ;  HUMIDIFICATION ;  DEGRADATION ;  OPERATION
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000245369100040
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/99331
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 PEMFC Key Mat & Technol, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China

Recommended Citation:
Zhang, Yu,Zhang, Huamin,Zhu, Xiaobing,et al. Fabrication and characterization of a PTFE-reinforced integral composite membrane for self-humidifying PEMFC[J]. JOURNAL OF POWER SOURCES,2007,165(2):786-792.
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