Effective protonic and electronic conductivity of the catalyst layers in proton exchange membrane fuel cells

被引：49
|
作者：
Du, CY [1 ]
Shi, PF [1 ]
Cheng, XQ [1 ]
Yin, GP [1 ]
机构：
[1] Harbin Inst Technol, Dept Appl Chem, Harbin 150001, Peoples R China
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2004年 / 6卷 / 05期
关键词：
fuel cells; catalyst layers; protonic conductivity; electronic conductivity; random packed spheres; numerical model;
D O I：
10.1016/j.elecom.2004.02.006
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The effective protonic and electronic conductivity of the catalyst layers in proton exchange membrane fuel cells has been investigated using a numerical model derived from the random packed spheres with simple cubic, body-centered cubic and face-centered cubic structures. A correlation equation of the effective conductivity is obtained. The model has been validated by the agreement between the simulation and the experimental. The relationships between porosity and the effective conductivity and influences of temperature and water activity on the effective protonic conductivity of the catalyst layers are presented which demonstrate the broad applicability of this model. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：435 / 440
页数：6
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