The Role of Nitrogen Doping on Durability in the Pt-Ru/HOPG System

S. Pylypenko, A. Queen, K. C. Neyerlin, T. Olson, A. Dameron, K. O'Neill, D. Ginley, B. Gorman, S. Kocha, H. N. Dinh, T. Gennett, R. O'Hayre

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This study investigates the role of the nitrogen doping on the durability of Pt-Ru metal nanophase catalysts supported on highly-oriented pyrolytic graphite (HOPG) substrates. The effect of the ion dose during N2 low ion energy implantation on the degree of the HOPG modification and levels of nitrogen doping are evaluated using X-ray photoelectron and Raman spectroscopy. Pt-Ru catalyst metal was deposited onto unmodified and N-implanted HOPG substrates using microwave and magnetron sputtering deposition routes, resulting in deposition either with or without preferential nucleation in the defect-sites. The role of the nitrogen on improved bonding between catalyst and support is evident from the microscopic evaluation of substrates after potential cycling.

Original languageAmerican English
Pages (from-to)351-357
Number of pages7
JournalECS Transactions
Issue number1 PART 1
StatePublished - 2010
Event10th Polymer Electrolyte Fuel Cell Symposium, PEFC 10 - 218th ECS Meeting - Las Vegas, NV, United States
Duration: 10 Oct 201015 Oct 2010

NREL Publication Number

  • NREL/JA-560-48741


  • nitrogen-doped carbon
  • PEM fuel cells
  • substrate characterization


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