Positioning of a Reference Electrode in a PEM Fuel Cell

被引：23

作者：

Kulikovsky, A. A. ^{[1
,2
]}

Berg, P. ^{[3
]}

机构：

[1] Forschungszentrum Julich, Inst Energy & Climate Res, IEK Electrochem Proc Engn 3, D-52425 Julich, Germany

[2] Moscow MV Lomonosov State Univ, Ctr Res Comp, Moscow 119991, Russia

[3] NTNU, Dept Phys, N-7491 Trondheim, Norway

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2015年 / 162卷 / 08期

关键词：

PLACEMENT; CHANNEL;

D O I：

10.1149/2.0231508jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

We report an analytical solution for the membrane potential in a PEM fuel cell which consist of a half-plane (semi-infinite) anode and a large-area (infinite) cathode. Mathematically, the problem is analogous to the Gouy-Chapman problem for the potential distribution inside the diffuse double layer at a flat metal/electrolyte interface. An expression for the characteristic length l(*) of the membrane potential variation in the anode-free domain is derived. This expression suggests a minimum distance 3l(*) between the anode edge and a reference electrode at which the potential of the reference electrode yields the cathode overpotential in the working domain of the cell. (C) The Author(s) 2015. Published by ECS. All rights reserved.

引用

页码：F843 / F848

页数：6

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