Reduced contact resistance of PEM fuel cell's bipolar plates via surface texturing

被引：115

作者：

Kraytsberg, A. ^{[1
]}

Auinat, A. ^{[1
]}

Ein-Eli, Y. ^{[1
]}

机构：

[1] Technion Israel Inst Technol, Dept Mat Engn, IL-32000 Haifa, Israel

来源：

JOURNAL OF POWER SOURCES | 2007年 / 164卷 / 02期

关键词：

contact resistance; PEM fuel cells; bipolar plates; mechanical texturing;

D O I：

10.1016/j.jpowsour.2006.11.033

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：

Polymer electrolyte fuel cell performance strongly depends on properties of the stack bipolar plates. Stainless steel, being an attractive material for bipolar plates, raises major concern as having a high contact resistance. It is assumed that most of this contact resistance is governed by electrical properties of the developed oxide surface film. Accurate consideration of existing data and measurements of mechanically treated stainless steel/carbon interface reveals a substantial influence of surface topography on the contact resistance. Contact resistance may change tenfold, depending on substrate surface treatment and roughness. A model describing carbon/stainless steel interface is introduced, explaining the observed behavior. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：697 / 703

页数：7

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