Corrosion study on different types of metallic bipolar plates for polymer electrolyte membrane fuel cells

被引：33

作者：

Silva, R. F. ^{[1
]}

Pozio, A. ^{[1
]}

机构：

[1] ENEA, CR Casaccia, I-00060 Rome, Italy

来源：

JOURNAL OF FUEL CELL SCIENCE AND TECHNOLOGY | 2007年 / 4卷 / 02期

关键词：

stainless steel; Ni-based alloy; PVD coating; electrical resistance; PEMFC;

D O I：

10.1115/1.2713768

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Three different types of metallic bipolar plates (commercial stainless steels, Ni-based alloys, and nitride-coated steels) were investigated in terms of their interface contact resistance (ICR) and corrosion resistance in conditions typical of a proton exchange membrane fuel cell environment. The results showed that stainless steels are unsuitable because of the formation of nonconductive oxide that leads to high ICR. Ni-based alloys showed to be prone to corrosion in acidic medium, although they have an ICR comparable to commercially available graphite. Endurance tests carried out on nitride-coated stainless-steel specimens showed a low ICR and very good corrosion resistance of this material.

引用

页码：116 / 122

页数：7

共 25 条

[1] Carbon/carbon composite bipolar plate for proton exchange membrane fuel cells [J].