The formation of protective nitride surfaces for PEM fuel cell metallic bipolar plates

M. P. Brady; B. Yang; H. Wang; J. A. Turner; K. L. More; M. Wilson; F. Garzon

doi:10.1007/s11837-006-0054-4

The formation of protective nitride surfaces for PEM fuel cell metallic bipolar plates

M. P. Brady, B. Yang, H. Wang, J. A. Turner, K. L. More, M. Wilson, F. Garzon

Center for Nanophase Matls Sciences

Research output: Contribution to journal › Article › peer-review

66 Scopus citations

Abstract

The selective gas nitridation of model nickel-based alloys was used to form dense, electrically conductive and corrosion-resistant nitride surface layers, including TiN, VN, CrN, Cr₂N, as well as a complex NiNbVN phase. Evaluation for use as a protective surface for metallic bipolar plates in proton exchange membrane fuel cells (PEMFC) indicated that CrN/Cr₂N based surfaces hold promise to meet U.S. Department of Energy (DOE) performance goals for automotive applications. The thermally grown CrN/Cr₂N surface formed on model Ni-Cr based alloys exhibited good stability and low electrical resistance in single-cell fuel cell testing under simulated drive-cycle conditions. Recent results indicate that similar protective chromium nitride surfaces can be formed on less expensive Fe-Cr based alloys potentially capable of meeting DOE cost goals.

Original language	English
Pages (from-to)	50-57
Number of pages	8
Journal	JOM
Volume	58
Issue number	8
DOIs	https://doi.org/10.1007/s11837-006-0054-4
State	Published - Aug 2006

Funding

The authors thank B.A. Pint, J.H. Schneibel, G.J. Tatlock, and P.F. Tor-torelli for helpful comments in reviewing this manuscript. Funding from the U.S. Department of Energy (DOE) Hydrogen, Fuel Cells, and Infrastructure program is gratefully acknowledged. Oak Ridge National Laboratory is managed by UT-Battelle, LLC for the U.S. DOE under contract DE-AC05-00OR22725.

Funders	Funder number
U.S. Department of Energy
Oak Ridge National Laboratory	DE-AC05-00OR22725

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abstract = "The selective gas nitridation of model nickel-based alloys was used to form dense, electrically conductive and corrosion-resistant nitride surface layers, including TiN, VN, CrN, Cr2N, as well as a complex NiNbVN phase. Evaluation for use as a protective surface for metallic bipolar plates in proton exchange membrane fuel cells (PEMFC) indicated that CrN/Cr2N based surfaces hold promise to meet U.S. Department of Energy (DOE) performance goals for automotive applications. The thermally grown CrN/Cr2N surface formed on model Ni-Cr based alloys exhibited good stability and low electrical resistance in single-cell fuel cell testing under simulated drive-cycle conditions. Recent results indicate that similar protective chromium nitride surfaces can be formed on less expensive Fe-Cr based alloys potentially capable of meeting DOE cost goals.",

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AU - More, K. L.

AU - Wilson, M.

AU - Garzon, F.

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The formation of protective nitride surfaces for PEM fuel cell metallic bipolar plates

Abstract

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