Influence of the thickness of sputter-deposited platinum films on the electrochemical promotion of propane combustion
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8 to 120 nm-thick Pt coatings were sputter-deposited on Yttria-Stabilised Zirconia (YSZ) membranes, 17 mm in diameter, by magnetron sputtering of a Pt target at low pressure (0.3 Pa). The catalytic activity of propane combustion under open-circuit conditions is first measured near to the stoichiometry (0.2%C3H8/1%O2) and shows that the coatings present a rather high catalytic activity. Close-circuit measurements were finally performed at 337 °C and 400 °C. They show that rather high faradaic efficiencies in the range 106 can be reached as soon as the Pt film is thick enough to allow a bias of its whole area.
KeywordsCombustion Physical Chemistry Zirconia Platinum Propane
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- C.G. Vayenas, M.M. Jaksic, S. Bebelis, S.G. Neophitides, in: Modern Aspects of Electrochemistry (J.O.M. Bockris, B.E. Coway and R.E. White, Eds.), Vol. 29, p. 57, Plenum Press, New York (1996).Google Scholar
- A. Billard, J. Steinmetz, C. Frantz, Mater. Sci. Eng.A140, 802 (1991).Google Scholar