Microstructure effects on the electrochemical corrosion of carbon materials and carbon-supported Pt catalysts

Olga V. Cherstiouk, A. N. Simonov, N. S. Moseva, Svetlana V. Cherepanova, Pavel A. Simonov, Vladimir I. Zaikovskii, Elena R. Savinova

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Abstract

The electrochemical corrosion behavior of a set of porous carbonaceous materials of interest as catalyst supports for polymer electrolyte membrane fuel cells was examined in 2 M H2SO4 at 80 °C at constant electrode potential of 1.2 V vs. RHE. Correlations have been observed between the specific rates of corrosion of carbon materials and carbon-supported Pt catalysts on the one hand and their substructural characteristics derived from X-ray diffraction analysis on the other hand. Carbon supports of the Sibunit family and catalytic filamentous carbons possess lower specific (i.e., surface area normalized) corrosion currents compared to conventional furnace black Vulcan XC-72 and better stabilize Pt nanoparticles.

Original languageEnglish
Pages (from-to)8453-8460
Number of pages8
JournalElectrochimica Acta
Volume55
Issue number28
DOIs
Publication statusPublished - 1 Dec 2010
Externally publishedYes

Keywords

  • Carbon materials
  • Carbon-supported Pt fuel cell catalysts
  • Electrochemical corrosion
  • Microstructure
  • Sibunit carbons

Cite this

Cherstiouk, O. V., Simonov, A. N., Moseva, N. S., Cherepanova, S. V., Simonov, P. A., Zaikovskii, V. I., & Savinova, E. R. (2010). Microstructure effects on the electrochemical corrosion of carbon materials and carbon-supported Pt catalysts. Electrochimica Acta, 55(28), 8453-8460. https://doi.org/10.1016/j.electacta.2010.07.047