Anode catalyst layer with novel microstructure for a direct methanol fuel cell

被引：29

作者：

Liu, Guicheng ^{[1
,2
]}

Wang, Meng ^{[1
]}

Wang, Yituo ^{[1
]}

Ye, Feng ^{[3
]}

Wang, Tongtao ^{[4
]}

Tian, Zhe ^{[1
]}

Wang, Xindong ^{[1
,2
]}

机构：

[1] Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China

[2] Univ Sci & Technol Beijing, Dept Phys Chem, Beijing 100083, Peoples R China

[3] Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China

[4] Minist Sci & Technol, Div Policy Studies, CSTEC, Beijing 100045, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2012年 / 37卷 / 10期

关键词：

Anode catalyst layer; Pore size distribution; Active area; Mass transfer; MEMBRANE-ELECTRODE ASSEMBLIES; HYDROCARBON MEMBRANE; PERFORMANCE; FABRICATION;

D O I：

10.1016/j.ijhydene.2012.02.040

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An anode catalyst layer (ACL) with novel microstructure for direct methanol fuel cells (DMFCs) based on the catalyst coated membrane (CCM) technique is prepared by heating-spray method in this paper. The morphology and pore distribution of the novel ACL are characterized by scanning electron microscopy (SEM) and specific surface area (BET) analysis, respectively. A continuous flocculent structure with abundant micropores and a clear hierarchical distribution of pore diameter are obtained in the ACL. The DMFC performance is investigated by polarization curves measurements. In compared with traditional ACL, the novel structure ACL has larger active surfaces and exhibits higher performance with 39% increase in maximum power density during the single cell test at 80 degrees C. The possible reason for the increased performance has been analyzed and ascribed to the novel structure for the ordered mass transfer and the reduced internal resistance. Crown Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：8659 / 8663

页数：5

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