Characteristic length of fuel and oxygen consumption in feed channels of polymer electrolyte fuel cells

被引：25

作者：

Kornyshev, AA ^{[1
]}

Kulikovsky, AA ^{[1
]}

机构：

[1] Res Ctr Julich, Inst Mat & Proc Energy Syst IWV 3, D-52425 Julich, Germany

来源：

ELECTROCHIMICA ACTA | 2001年 / 46卷 / 28期

关键词：

PEMFC; DMFC; channel; feed consumption;

D O I：

10.1016/S0013-4686(01)00662-4

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

How much of feed channels is actually used in a fuel cell? This problem is considered in this paper where we study gas or liquid feed consumption in the feed supplying channels of a polymer electrolyte fuel cell. Simple analytical expressions which define profiles of feed concentration along the channel and expressions for characteristic length of feed consumption are obtained. For typical conditions this length could be as low as several tens of centimeters. The dependence of consumption length on reaction rate parameters and system parameters is discussed. Analytical results are in good agreement with data of simulation, performed specially to verify the validity of the theory. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：4389 / 4395

页数：7

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