versión On-line ISSN 0718-0764
HOYOS, Bibian A; RESTREPO, Ana I y MESA, Carlos M. Pt-Ru and Pt-Ir Anodes for Direct Methane and Propane Proton Exchange Membrane Fuel Cells. Inf. tecnol. [online]. 2007, vol.18, n.4, pp.41-46. ISSN 0718-0764. http://dx.doi.org/10.4067/S0718-07642007000400007.
In this paper, the effect of temperature in the performance of proton exchange membrane fuel cells feed with methane and propane, using oxygen as feed to the cathode, is presented. For the fuel oxidation in the anodes, five carbon supported catalysts were tested: Pt, Pt85/Ru15, Pt50/Ru50, Pt90/Ir10, and Pt50/Ir50. Carbon-supported pure platinum was used as catalysts in the cathode side. The performance of the fuel cells was evaluated by polarization curves obtained from the current-potential data. Results indicate that methane oxidation is favoured at high temperatures on the Pt90/Ir10, Pt50/Ir50 and Pt50/Ru50 catalysts. At low temperatures the best catalysts were Pt and Pt85/Ru15. The Pt85/Ru15 bimetallic mixture showed the best performance to carry out propane oxidation at 30 °C.
Palabras clave : fuel cells; Pt-Ru and Pt-Ir anodes; direct propane; direct methane.