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题名: The effect of platinum in a Nafion membrane on the durability of the membrane under fuel cell conditions
作者: Zhao, D.1, 2, 3;  Yi, B. L.1;  Zhang, H. M.1;  Liu, Meilin1, 3
通讯作者: 衣宝廉
关键词: Proton exchange membrane ;  Degradation ;  Durability ;  Platinum deposition ;  Free radicals ;  Hydrogen peroxide
刊名: JOURNAL OF POWER SOURCES
发表日期: 2010-08-01
DOI: 10.1016/j.jpowsour.2010.02.043
卷: 195, 期:15, 页:4606-4612
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: The effect of platinum on free radical generation and membrane degradation in proton exchange membrane (PEM) fuel cells is investigated using three typical cell configurations. Examinations of the fluoride emission rates (FERs) under different testing conditions indicate that platinum deposited in the membrane plays an important role as a catalytic center for the formation of H(2)O(2) and HO(center dot) free radicals, leading to PEM degradation. The chemical durability of the membranes is tested in accelerated Fenton tests. It confirms the formation of free radicals in the presence of platinum in the decomposition of H(2)O(2) by colorimetric method with dimethyl sulfoxide (DMSO) as the trapping agent. In addition, structural and morphological changes of the membranes are characterized using FT-IR spectroscopy and scanning electron microscopy (SEM). Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.
关键词[WOS]: PROTON-EXCHANGE MEMBRANE ;  STANDARD ADDITION METHOD ;  OPEN-CIRCUIT OPERATION ;  DEGRADATION MECHANISM ;  HYDROGEN-PEROXIDE ;  ELECTROLYTE MEMBRANES ;  IONOMER MEMBRANES ;  ACID ;  PEMFC ;  DECOMPOSITION
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000277820500007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/103551
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, Liaoning, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Georgia Inst Technol, Sch Mat Sci Engn, Atlanta, GA 30332 USA

Recommended Citation:
Zhao, D.,Yi, B. L.,Zhang, H. M.,et al. The effect of platinum in a Nafion membrane on the durability of the membrane under fuel cell conditions[J]. JOURNAL OF POWER SOURCES,2010,195(15):4606-4612.
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