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题名: Nafion/PTFE composite membranes for fuel cell applications
作者: Liu, FQ;  Yi, BL;  Xing, DM;  Yu, JR;  Zhang, HM
关键词: fuel cell ;  PTFE ;  Nafion ;  composite membrane ;  performance
刊名: JOURNAL OF MEMBRANE SCIENCE
发表日期: 2003-02-15
卷: 212, 期:1-2, 页:213-223
收录类别: SCI
文章类型: Article
部门归属: 301
项目归属: 301
产权排名: 1;1
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Engineering, Chemical ;  Polymer Science
研究领域[WOS]: Engineering ;  Polymer Science
英文摘要: Porous polytetrafluoroethylene (PTFE) membranes were used as support material for Nafion((R))/PTFE composite membranes. The composite membranes were synthesized by impregnating porous PTFE membranes with a self-made Nafion solution. The resulting composite membranes were mechanically durable and quite thin relative to traditional perfluorosulfonated ionomer membranes (PFSI); we expect the composite membranes to be of low resistance and cost. In this study, we used three kinds of porous PTFE films to prepare Nafion/PTFE composite membranes of different thickness. Scanning electron micrographs and oxygen permeabilities showed that Nafion resin is distributed uniformly in the composite membrane and completely plug the micropores, there is a continuous thin Nation film present on the PTFE surface. The variation in water content of the composite and Nafion 115 membranes with temperature was determined. At the same temperature, water content of the composite membranes was smaller than that of the Nafion 115. In both dry and wet conditions, maximum strength and break strength of C-325(#) and C-345(#) were larger than those of Nafion 112 due to the reinforcing effect of the porous PTFE films. And the PEMFC performances and the lifetime of the composite membranes were also tested on the self-made apparatus. Results showed that the bigger the porosity of the substrate PTFE films, the better the fuel cell performance; the fuel cell performances of the thin composite membranes were superior to that of Nation 115 membrane; and after 180 h stability test at 500 mA/cm(2), the cell voltage showed no obvious drop. (C) 2002 Published by Elsevier Science B.V.
关键词[WOS]: IMPREGNATED GORE-TEX ;  POLYMER ELECTROLYTE MEMBRANES ;  ION-TRANSPORT
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000180691400019
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/82773
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 R&D Ctr, Dalian 116023, Peoples R China

Recommended Citation:
Liu, FQ,Yi, BL,Xing, DM,et al. Nafion/PTFE composite membranes for fuel cell applications[J]. JOURNAL OF MEMBRANE SCIENCE,2003,212(1-2):213-223.
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