Polarization curve of partially degraded catalyst layer

被引：9

作者：

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

机构：

[1] Res Ctr Julich, Inst Energy & Climate Res IEK 3, D-52425 Julich, Germany

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

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2010年 / 12卷 / 12期

关键词：

Catalyst layer; Degradation; Aging; Modeling; ELECTROLYTE FUEL-CELLS;

D O I：

10.1016/j.elecom.2010.10.023

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A model of a partially degraded catalyst layer (CL) in a fuel cell is reported. The degradation is modeled as a lowering of the exchange current density in a sub-layer at the membrane/CL interface. Degradation of 30 to 40% of the CL thickness may dramatically increase the polarization voltage. At a large current density, the voltage loss in such a two-layer system is close to the loss in a fully degraded CL Estimates of this effect for a PEMFC cathode and a DMFC anode are performed. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1780 / 1783

页数：4

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