Ni-Cr Co-implanted 316L stainless steel as bipolar plate in polymer electrolyte membrane fuel cells

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)690-700
Journal / PublicationInternational Journal of Hydrogen Energy
Issue number2
Publication statusPublished - Jan 2010


A Ni-Cr enriched layer about 60 nm thick with improved conductivity is formed on the surface of austenitic stainless steel 316L (SS316L) by ion implantation. The electrochemistry results reveal that a proper Ni-Cr implant fluence can greatly improve the corrosion resistance of SS316L in the simulated PEMFC environment. The samples after the potentiostatic test are also analyzed by XPS and the ICR values are measured. The XPS results indicate that the composition of the passive film change from a mixture of Fe oxides and Cr oxide to a Cr oxide dominated passive film after the potentiostatic test. Hence, the ICR increases after polarization due to depletion of iron in the passive film. Nickel is enriched in the passive film formed in the simulated PEMFC cathode environment after ion implantation thereby providing better conductivity than that formed in the anode one. © 2009 Professor T. Nejat Veziroglu.

Research Area(s)

  • Bipolar plate, Corrosion resistance, Ion implantation, Polymer electrolyte membrane fuel cells, Stainless steel 316L