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题名: Determination of ionic resistance and optimal composition in the anodic catalyst layers of DMFC using AC impedance
作者: Zhao, XS;  Fan, XY;  Wang, SL;  Yang, SH;  Yi, BL;  Xin, Q;  Sun, GQ
通讯作者: 孙公权
关键词: DMFC ;  ionic resistance ;  catalyst loading ;  impedance spectra ;  methanol electro-oxidation
刊名: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
发表日期: 2005-08-01
DOI: 10.1016/j.ijhydene.2005.01.006
卷: 30, 期:9, 页:1003-1010
收录类别: SCI
文章类型: Article
部门归属: 3
项目归属: 305
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Chemistry ;  Electrochemistry ;  Energy & Fuels
英文摘要: In the present study, a method based on transmission-line mode for a porous electrode was used to measure the ionic resistance of the anode catalyst layer under in situ fuel cell operation condition. The influence of Nafion content and catalyst loading in the anode catalyst layer on the methanol electro-oxidation and direct methanol fuel cell (DMFC) performance based on unsupported Pt-Ru black was investigated by using the AC impedance method. The optimal Nafion content was found to be 15 wt% at 75 degrees C. The optimal Pt-Ru loading is related to the operating temperature, for example, about 2.0 mg/cm(2) for 75-90 degrees C, 3.0 mg/cm2 for 50 degrees C. Over these values, the cell performance decreased due to the increases in ohmic and mass transfer resistances. It was found that the peak power density obtained was 217 mW/cm(2) with optimal catalyst and Nafion loading at 75 degrees C using oxygen. (c) 2005 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: METHANOL FUEL-CELLS ;  GAS-DIFFUSION ELECTRODES ;  PROTON CONDUCTIVITY ;  SPECTROSCOPY ;  RESISTIVITIES ;  OXIDATION
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000229710200009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/93303
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.Direct Alcohol Fuel Cell Lab, Chinese Acad Sci, Dalian Inst Chem Phys, Liaoning 116023, Peoples R China

Recommended Citation:
Zhao, XS,Fan, XY,Wang, SL,et al. Determination of ionic resistance and optimal composition in the anodic catalyst layers of DMFC using AC impedance[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2005,30(9):1003-1010.
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