Stainless Steel as Bipolar Plate Material for Polymer Electrolite Membrane Fuel Cells

Heli Wang, Mary Ann Sweikart, John A. Turner

Research output: Contribution to journalArticlepeer-review

683 Scopus Citations

Abstract

Due to their low cost, high strength, ease of machining and shaping into thin sheets, as well as their corrosion resistance, stainless steels are considered to be good candidates for bipolar plate materials for the polymer electrolyte membrane fuel cell (PEMFC). We have tested several stainless steels in simulated PEMFC environments for application as bipolar plates. The results showed that the chromium content in the steel alloys has an important influence on the anodic behavior. The interfacial contact resistance of the carbon paper/stainless steel interface has been evaluated. Both tests show that 349™ is the best candidate for this application. When 349™ stainless steel was polarized in simulated PEMFC environments, it was found that stable passive films formed within 30 min. The interfacial contact resistance between the carbon paper and stainless steel increased due to the formation of the passive film. However, as soon as a stable passive film is formed, the interfacial contact resistance stabilized. Published by Elsevier Science B.V.

Original languageAmerican English
Pages (from-to)243-251
Number of pages9
JournalJournal of Power Sources
Volume115
Issue number2
DOIs
StatePublished - 10 Apr 2003

NREL Publication Number

  • NREL/JA-560-33416

Keywords

  • Bipolar plate
  • Corrosion
  • Passive film
  • Polymer electrolyte membrane fuel cell
  • Stainless steel

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