Abstract
Stainless steel bipolar plates for the polymer electrolyte membrane (PEM) fuel cell offer many advantages over conventional machined graphite. Austenitic stainless steel 316L is a traditional candidate for metal bipolar plates.During a long operation time, metal oxide formation leads to contact resistance, and metal dissolution can cause contamination of the membrane electrode assembly (MEA). A pure Carbon was coated on the surface of Stainless steel and provided a good anticorrosion layer. The carbon film has a low area specific resistance compared to the composite coating because it has a high surface conductivity. In addition, The ICR between the carbon-coated SS316 and the carbon paper is 225–1247 mΩ-cm2 under compaction forces between 20 and 280 N cm−2. The carbon-coated SS316L shows good corrosion resistance in the simulated PEMFC environment. After testing the single cell for 4000hr, the power density was decay less than 1%. Therefore, the carbon-coated SS316L has an excellent durability property.Key words : fuel cell, carbon and bipolar plate
Published Version
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