Electrochemical Characteristic of Cr-Based Film Coated 304SS as PEMFC Bipolar Plates

Abstract:

By using electrochemical techniques, the electrochemical characteristic of Cr-based film coated 304 stainless steel (304SS) as proton exchange membrane fuel cell (PEMFC) bipolar plates, which was deposited by cathodic arc deposition technology, was studied. The results indicated that Cr, CrN, (TiCr)N and (TiN+Ti) film could not only decreased the steel’s contact resistance but also improved its corrosion resistance and the fuel cell stack’s performance. Since Cr, (CrN) and (TiCrN) film were more compact than (TiN+Ti) film, which contained the oxides of Ti, as bipolar plates, the performance for all film change in the following order: Cr film ≈(CrN) film ≈ (TiCrN) film >(TiN+Ti) film.

• Periodical: Advanced Materials Research (Volumes 160-162)
• Pages: 1469-1475
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.160-162.1469
• Online since: November 2010
• Authors: Nai Bao Huang, Cheng Hao Liang, Guo Qiang Lin, Li Shuang Xu, Bao Lian Li
• Keywords: Bipolar Plate, Cr-Based Film, Electrochemical Characteristic, PEMFC

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