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题名: Direct methanol fuel cells: The effect of electrode fabrication procedure on MEAs structural properties and cell performance
作者: Song, SQ;  Liang, ZX;  Zhou, WJ;  Sun, GQ;  Xin, Q;  Stergiopoulos, V;  Tsiakaras, P
关键词: direct methanol fuel cell ;  MEA preparation ;  decal transfer method
刊名: JOURNAL OF POWER SOURCES
发表日期: 2005-08-18
DOI: 10.1016/j.jpowsour.2005.02.069
卷: 145, 期:2, 页:495-501
收录类别: ISTP ;  SCI
文章类型: Article
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: In the present paper, the effect of electrode preparation procedure on the structural properties of membrane electrode assembly (MEA) and consequently on the performance of direct methanol fuel cells (DMFCs) was investigated. Commercial PtRu black anode catalyst and Pt black cathode catalyst were characterized by XRD in their initial form and in their intermediate and final states after each step involved in catalyst-coated membrane electrode preparation procedure by a decal transfer method (DTM). XRD results demonstrated that the DTM process has a significant effect on the catalyst structural properties, especially on the particle size of Pt black cathode catalyst. It is also discussed that among all the steps involved in the electrode fabrication procedure, catalyst ink preparation and high temperature transfer process are key factors affecting the particle size of Pt black catalyst. Furthermore, it was found that the maximum power density of the single DMFC using a MEA fabricated by the DTM, when air is used as oxidant, is more than two times greater than that of the cell using conventionally prepared MEA, and more than three times greater when pure oxygen is used as oxidant. This could be attributed to the easier mass transportation due to the thinner catalyst layer and the better contact between the catalyst layer and the electrolyte membrane in the former case, even if, according to in situ CO stripping voltammetry results in the fuel cell anode environment, the surface composition of PtRu anode has been changed. (c) 2005 Elsevier B.V. All rights reserved.
关键词[WOS]: CATALYSTS ;  PLATINUM ;  ELECTROOXIDATION ;  OXIDATION
语种: 英语
WOS记录号: WOS:000231893300051
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139864
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, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Direct Alcohol Fuel Cell Lab, Dalian 116023, Peoples R China
3.Univ Thessaly, Sch Engn, Dept Mech & Ind Engn, Volos 38334, Greece

Recommended Citation:
Song, SQ,Liang, ZX,Zhou, WJ,et al. Direct methanol fuel cells: The effect of electrode fabrication procedure on MEAs structural properties and cell performance[J]. JOURNAL OF POWER SOURCES,2005,145(2):495-501.
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