The voltage-current curve of a polymer electrolyte fuel cell: "exact" and fitting equations

被引：50

作者：

Kulikovsky, AA ^{[1
]}

机构：

[1] Res Ctr Julich, Inst Mat & Proc Energy Syst, D-52425 Julich, Germany

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2002年 / 4卷 / 11期

关键词：

catalyst layer; PEFC; polarization voltage; voltage-current curve; fitting equation;

D O I：

10.1016/S1388-2481(02)00466-6

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

An analytical solution to the problem of the performance of the cathode electrocatalyst layer in the polymer electrolyte fuel cell is obtained. This solution describes the effect of limiting current density due to imperfect oxygen transport in backing layer. Simple formulas for electrocatalyst layer polarization voltage are derived in the limiting cases of small and large currents. Based on exact formulas, the fitting equation for the polarization voltage is obtained. All fitting parameters are expressed in terms of transport and kinetic parameters. Comparison of theoretical and experimental voltage-current curves of a fuel cell shows reasonable agreement. The fitting equation furnishes an opportunity to characterize fuel cells using experimental voltage-current curves. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：845 / 852

页数：8