Corrosion Study on Different Types of Metallic Bipolar Plates for Polymer Electrolyte Membrane Fuel Cells
- 8 June 2006
- journal article
- Published by ASME International in Journal of Fuel Cell Science and Technology
- Vol. 4 (2), 116-122
- https://doi.org/10.1115/1.2713768
Abstract
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.Keywords
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