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题名: A new hydrophobic thin film catalyst layer for PEMFC
作者: Song, Wei1, 2;  Yu, Hongmei1;  Hao, Lixing1, 2;  Miao, Zhili1, 2;  Yi, Baolian1;  Shao, Zhigang1
通讯作者: 俞红梅
关键词: Fuel cell ;  Proton exchange membrane (PEM) ;  Thin film catalyst layer ;  PTFE ;  Decal method
刊名: SOLID STATE IONICS
发表日期: 2010-03-29
DOI: 10.1016/j.ssi.2010.01.022
卷: 181, 期:8-10, 页:453-458
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]: Chemistry, Physical ;  Physics, Condensed Matter
研究领域[WOS]: Chemistry ;  Physics
英文摘要: A new hydrophobic thin film catalyst layer (CL) was prepared by the decal method in this work. Polytetrafluoroethylene (PTFE) was introduced to the catalyst ink with 1 wt.% Nafion (R) ionomer as the hyperdispersant. Aluminum foil was adopted as the transferring medium which enabled the sintering process of PTFE. Then an appropriate amount of Nafion (R) ionomer was sprayed onto the CL for proton conduction. At last, the CL was transferred onto a Nafion (R) membrane and the catalyst-coated membrane (CCM) was formed. Contact angle measurement and mercury intrusion porosimetry test were conducted to characterize the hydrophobicity and porosity of the thin film CL The results showed that PTFE addition favored the CL hydrophobicity and porosity. The optimal PTFE content was also deduced by comparing the fuel cell performance under different PTFE contents. Electrochemical analysis revealed that PTFE addition decreased the electrochemical active area (ECA) but enhanced the diffusion process in the CL (C) 2010 Elsevier B.V. All rights reserved.
关键词[WOS]: MEMBRANE FUEL-CELLS ;  ELECTROCHEMICAL IMPEDANCE ;  EMPIRICAL-EQUATION ;  DIFFUSION LAYER ;  MASS-TRANSPORT ;  PERFORMANCE ;  CATHODE ;  ELECTRODES ;  TEMPERATURE ;  FABRICATION
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000276781300013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/103623
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 Cells, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Song, Wei,Yu, Hongmei,Hao, Lixing,et al. A new hydrophobic thin film catalyst layer for PEMFC[J]. SOLID STATE IONICS,2010,181(8-10):453-458.
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