An analytical study of the PEM fuel cell with axial convection in the gas channel

被引：10

作者：

Lin, Yur-Tsai ^{[1
,2
]}

Lin, Cong-Ting ^{[1
,2
]}

Chen, Yen-Cho ^{[4
]}

Yin, Ken-Ming ^{[3
]}

Yang, Chin-Ting ^{[5
]}

机构：

[1] Yuan Ze Univ, Dept Mech Engn, Tao Yuan 320, Taiwan

[2] Yuan Ze Univ, Fuel Cells Res Ctr, Tao Yuan 320, Taiwan

[3] Yuan Ze Univ, Dept Chem Engn, Tao Yuan 320, Taiwan

[4] Natl United Univ, Dept Energy & Resources, Miaoli 360, Taiwan

[5] St Johns Univ, Dept Mech & Comp Aided Engn, Taipei 251, Taiwan

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2007年 / 32卷 / 17期

关键词：

PEM fuel cells; Quasi two-dimensional modeling; axial convection; analytical solutions;

D O I：

10.1016/j.ijhydene.2007.05.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A quasi two-dimensional mathematical model for a polymer electrolyte membrane (PEM) fuel cell is developed with consideration of axial convection in the gas channel and analytical solutions are obtained. A half-cell model which contains the cathode gas channel, gas diffuser, catalyst layer, and the membrane is investigated. To account for the effect of gas velocity in the gas channel, axial convection is included in the oxygen transport equation of the gas channel. Expressions for the oxygen mass fraction distribution in the gas channel, gas diffuser, and catalyst layer, and the current density and the membrane phase potential in the catalyst layer and membrane are derived. The solutions are presented in the form of infinite series. The polarization curve is also expressed as a function of the surface overpotential. Due to the advantage of the closed-form solutions this model can be easily employed as a diagnostic tool for PEM fuel cell simulations. (c) 2007 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

引用

页码：4477 / 4488

页数：12

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