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Bipolar plate materials for PEMFCs: A conductivity and stability study

TitoloBipolar plate materials for PEMFCs: A conductivity and stability study
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione2008
AutoriPozio, A., Zaza F., Masci A., and Silva R.F.
RivistaJournal of Power Sources
Parole chiaveChromium nitrides, Corrosion resistance, Electric conductivity, Interfacial contact resistance, Nickel alloys, Physical vapor deposition, Proton exchange membrane fuel cells (PEMFC), Stainless steel, Surface chemistry

Commercial stainless steels, Ni-based alloys and physical vapor deposition (PVD) chromium nitride (CrN)-coated stainless steels were evaluated as possible metallic bipolar plate materials in conditions that resemble a typical PEMFC cathode environment with respect to their interfacial contact resistance (ICR) and corrosion resistance. Results show that stainless steels have a high ICR and undergo corrosion. Although Ni-based alloys showed an ICR value comparable as to that of graphite, their behaviour was not satisfactory in a corrosive acidic medium. Only CrN-coated stainless steels demonstrated to have low ICR values and a very good corrosion resistance. © 2008 Elsevier B.V. All rights reserved.


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Citation KeyPozio2008631