Design of ordered-catalyst layers for polymer electrolyte membrane fuel cell cathodes

被引：31
|
作者：
Chisaka, Mitsuharu [1 ]
Daiguji, Hirofumi [1 ]
机构：
[1] Univ Tokyo, Grad Sch Frontier Sci, Inst Environm Studies, Kashiwa, Chiba 2778563, Japan
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2006年 / 8卷 / 08期
关键词：
nanostructure; agglomerate model; catalyst layer; cathode; PEMFC;
D O I：
10.1016/j.elecom.2006.06.009
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Cathode catalyst layers in polymer electrolyte membrane fuel cells (PEMFCs) composed of ordered structures were designed by using a modified agglomerate model. The kinetics of oxygen-reduction reaction at the catalyst-polymer electrolyte interface and proton and oxygen transport through the polymer electrolyte phase were considered. Calculations suggest that at ultra-low Pt loading, the cell performance is sensitive to the Pt loading, and that size reduction of ordered structures is essential to improve cell performance. At high Pt loading, the cell performance is not as sensitive to the Pt loading, and the ordered structures must be carefully optimized to obtain the maximum cell performance. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：1304 / 1308
页数：5
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