Abstract
Some acetals (e.g., methylal, ethylal and 1,3-dioxolane) were oxidized in different supporting electrolytes and on various electrodes, including oxide-based electrodes dispersed onto carbon powder. The electrooxidation of ethylal and 1,3-dioxolane was demonstrated for the first time. The fuel that exhibited the lower overvoltage from the electrooxidation curve was deduced. Then, from an analysis of the reaction products from long-term anodic experiments, the electrode reactions were deduced. It was shown that the anodic polarization of the electrooxidation of acetals in an acid medium is lower than that of methanol. Thus, acetals seem to be better fuels for fuel cell applications than methanol. It was also shown that ethylal and 1,3-dioxolane are oxidised more easily than methylal for fuel cell applications. Volcano behaviour was obtained for the plot of direct oxidation current density vs metal radius for various single noble metal electrodes. The highest current density was obtained with the Pt-based electrode. Similar behaviour was obtained with electrodes based on noble binary platinum alloys, where the electrooxidation current density increases with the difference in metal radius in each alloy (ΔR). Thus, the alloys that give the highest |ΔR|, e.g. Pt–Ru and Pt–Sn, exhibit the best electrooxidation current density.
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References
D. Morrisson, Electronic Design (2000) 32.
H. Chang, P. Koschany, C. Lim and J. Kim, J. New Mat. Electrochem. Syst. 3 (2000) 55.
C. Lamy and J-M. Léger, in: O. Savadogo, P.R. Roberge and T.N. Veziroglu (Eds), First International Symposium on 'New Materials for Fuel Cell Systems', Montréal, Canada, 9–13 July (1995), p. 296.
C. Lamy and J-M. Léger, in: O. Savadogo and P.R. Roberge (Eds), Second International Symposium on 'New Materials for Fuel Cell and Modern Battery Systems', Montréal, Canada 6–10 July (1997), p. 477.
R.M. Moore, S. Gottesfeld and P. Zelanay, in: S. Gottesfeld, T.F. Fuller and G. Halpert (Eds), Second International Symposium on 'Proton Conducting Membrane Fuel Cells', The Electrochemical Society, Pennington, NJ, Proceedings Vol. 98–27 (1999), p. 365.
R.M. Moore, S. Gottesfeld and P. Zelenay, in: S. Gottesfeld, T.F. Fuller and G. Halpert (Eds), Proceedings of the Second International Symposium on 'Proton Conducting Membrane Fuel Cells,' The Electrochemical Society, Pennington, NJ, Proceedings Vol. 98–27 (1999), p. 388.
S. Gottesfeld and P. Zelenay, in O. Savadogo (Ed.), Extended Abstracts, Proceedings of the Third International Symposium on 'New Materials for Electrochemical Systems', Montréal, Canada, 4–8 July (1999), p. 122.
O. Savadogo and M. Lacroix, in O. Savadogo and P.R. Roberge (Eds), Proceedings of the Second International Symposium on 'New Materials for Fuel Cell and Modern Battery Systems,' Montréal, Canada, 6–10 July (1997), p. 872.
H. Chagnon and O. Savadogo, in O. Savadogo (Ed.), Extended Abstracts, Proceedings of the Third International Symposium on 'New Materials for Electrochemical Systems', Montréal, Canada, 4–8 July (1999), p. 145.
S.R. Narayanan, E. Vamos, S. Surampudi, H. Frank, G. Alpert, G.K. Surya Prakash, M.C. Smart, R. Knieler and A. Olah, J. Electrochem. Soc. 144 (1997) 4195.
C. Starr, M.F. Sear and S. Alpert, Science 256 (1992) 981.
R.A. Peniana, D.J. Taube, E.R. Evitt, D.G. Doffler, P.R. Wentreek, G. Voss and T. Massuda, Science 259 (1993) 340.
J.T. Wang, W.C. Lin, M. Weber, S. Wasmus, R.F. Savinell, Electrochim. Acta 43 (1998) 3821.
M. Beaujean, Technical Report, Lambiotte et Cie, SA., July (1995).
O. Savadogo and A. Essalik, J. Electrochem. Soc. 141 (1994) L92.
O. Savadogo and A. Essalik, J. Electrochem. Soc. 143 (1996) 1814.
O. Savadogo and P. Beck, J. Electrochem. Soc. 143 (1996) 3482.
X. Yang and O. Savadogo, in O. Savadogo (Ed.), Extended Abstracts, Proceedings of the Third International Symposium on 'New Materials for Electrochemical Systems', Montréal, Canada, 4–8 July (1999), p. 143.
O. Savadogo and H. Chagnon, J. New Mat. Electrochem. Syst., submitted.
A. Fischer, M. Götz and H. Wendt, in O. Savadogo and P.R. Roberge (Eds), Second International Symposium on 'New Materials for Fuel Cell Systems', Montréal, Canada, 6–10 July (1997), p. 489.
M. Götz and H. Wendt, Electrochim. Acta 43 (1998) 363.
A. Aramata and M. Nakamura, in O. Savadogo, P.R. Roberge and T.N. Veziroglu (Eds), First International Symposium on 'New Materials for Fuel Systems', Montréal, Canada, 9–13 July (1995), p. 270.
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Savadogo, O., Yang, X. Electrooxidation of acetals for direct hydrocarbon fuel cell applications. Journal of Applied Electrochemistry 31, 787–792 (2001). https://doi.org/10.1023/A:1017543614693
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DOI: https://doi.org/10.1023/A:1017543614693