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题名: Electrode catalysts behavior during direct ethanol fuel cell life-time test
作者: Jiang, LH;  Sun, GQ;  Wang, SL;  Wang, GX;  Xin, Q;  Zhou, ZH;  Zhou, B
通讯作者: 辛勤
关键词: direct ethanol fuel cell ;  electrocatalyst ;  carbon supported platinum ;  PtSn ;  life time
刊名: ELECTROCHEMISTRY COMMUNICATIONS
发表日期: 2005-07-01
DOI: 10.1016/j.elecom.2005.04.021
卷: 7, 期:7, 页:663-668
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
类目[WOS]: Electrochemistry
研究领域[WOS]: Electrochemistry
英文摘要: In the present paper, a 60 h life-time test of a direct ethanol fuel cell (DEFC) at a current density of 20 mA cm(-2) (the beginning 38 h) and 40 mA cm(-2) (the last 22 h) was carried out. After the life-time test, the MEA could not achieve the former performance. X-ray diffraction (XRD), transmission electron microscopy (TEM) and energy dispersive X-ray analysis (EDX) were employed to characterize the anode and cathode catalyst before and after the life-time test. The XRD and TEM results showed that the particle size of the anode catalyst increased from 2.3 to 3.3 nm and the cathode from 3.0 to 4.6 nm. The EDX results of PtSn/C anode catalysts before and after the life-time test indicated that the content of the oxygen and tin, especially the content of the platinum, decreased prominently after the life-time test. The results suggest that the agglomeration of electrocatalysts, the destruction of the anode catalyst together with the fuel/water crossover from anode to cathode concurrently contribute to the performance degradation of the DEFC. (C) 2005 Elsevier B.V. All rights reserved.
关键词[WOS]: ANODE CATALYSTS ;  PERFORMANCE ;  DEGRADATION ;  DMFC
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000230251400005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/92751
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, Direct Methanol Fuel Cell Lab, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
4.Headwaters Nanokinetix, Lawrenceville, NJ 08648 USA

Recommended Citation:
Jiang, LH,Sun, GQ,Wang, SL,et al. Electrode catalysts behavior during direct ethanol fuel cell life-time test[J]. ELECTROCHEMISTRY COMMUNICATIONS,2005,7(7):663-668.
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