Analytical model of the anode side of DMFC: the effect of non-Tafel kinetics on cell performance

被引：50

作者：

Kulikovsky, AA ^{[1
]}

机构：

[1] Forschungszentrum Julich, Inst Mat & Proc Energy Syst IVW3, D-52425 Julich, Germany

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2003年 / 5卷 / 07期

关键词：

DMFC; anode catalyst layer; analytical model; polarization voltage;

D O I：

10.1016/S1388-2481(03)00115-2

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Analytical model of the anode side of a direct methanol fuel cell is developed. The model takes into account non-Tafel kinetics of electrochemical reaction of methanol oxidation, diffusion transport of methanol through the backing layer and methanol crossover. General expression for the polarization voltage of the anode side is derived and simplified in a limits of small and large currents. Total limiting current density appears to be a combination of reaction- and diffusion-limiting current densities. The effect of methanol crossover on performance of the anode side is rationalized. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：530 / 538

页数：9

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