Corrosion Science and Technology

The Corrosion Science Society of Korea (한국부식방식학회)
권호 표지
DOI QR코드

DOI QR Code

Carbon Corrosion at Pt/C Interface in Proton Exchange Membrane Fuel Cell Environment

  • Choi, Min-Ho (Department of Materials Science and Engineering, Chonnam National University) ;
  • Beom, Won-Jin (Department of Materials Science and Engineering, Chonnam National University) ;
  • Park, Chan-Jin (Department of Materials Science and Engineering, Chonnam National University)
  • Received : 2009.10.15
  • Accepted : 2010.12.13
  • Published : 2010.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

This study examined the carbon corrosion at Pt/C interface in proton exchange membrane fuel cell environment. The Pt nano particles were electrodeposited on carbon substrate, and then the corrosion behavior of the carbon electrode was examined. The carbon electrodes with Pt nano electrodeposits exhibited the higher oxidation rate and lower oxidation overpotential compared with that of the electrode without Pt. This phenomenon was more active at $75^{\circ}C$ than $25^{\circ}C$. In addition, the current transients and the corresponding power spectral density (PSD) of the carbon electrodes with Pt nano electrodeposits were much higher than those of the electrode without Pt. The carbon corrosion at Pt/C interface was highly accelerated by Pt nano electrodeposits. Furthermore, the polarization and power density curves of PEMFC showed degradation in the performance due to a deterioration of cathode catalyst material and Pt dissolution.

Keywords

References

  1. Z. Siroma, K. Ishii, K. Yasuda, Y. Miyazaki, M. Inaba, and A. Tasaka, Electrochem. Commun., 7, 1153 (2005). https://doi.org/10.1016/j.elecom.2005.08.014
  2. J. P. Meyers and R. M. Darling, J. Electrochem. Soc., 153, A1432 (2006). https://doi.org/10.1149/1.2203811
  3. M. M. E. Duarte, A. S. Pilla, J. M. Sieben, and C. E. Mayer, Electrochem. Commun., 8, 159 (2006). https://doi.org/10.1016/j.elecom.2005.11.003
  4. M. S. Suh, C. J. Park, and H. S. Kwon, Surf Coat. Tech., 200, 3527 (2006). https://doi.org/10.1016/j.surfcoat.2004.08.162
  5. C. J. Park and H. S. Kwon, Mater. Chem. Phys., 91, 355 (2005). https://doi.org/10.1016/j.matchemphys.2004.11.039
  6. J. M. Han, Corros. Sci. Tech., 8, 203 (2009).
  7. D. S. Seo, K. H. Lee, and H. S. Kim, Corros. Sci. Tech. 7, 319 (2008).