Actas de congresos
Catalysts For Dmfc: Relation Between Morphology And Electrochemical Performance
Registro en:
Electrochimica Acta. , v. 48, n. 25-26, p. 3869 - 3878, 2003.
134686
10.1016/S0013-4686(03)00523-1
2-s2.0-0141919410
Autor
Lizcano-Valbuena W.H.
Paganin V.A.
Leite C.A.P.
Galembeck F.
Gonzalez E.R.
Institución
Resumen
In this work Pt-Ru/C alloys were prepared by chemical reduction using various modifications of the formic acid method with the objective of improving the performance. The supported alloys were characterized by XRD, backscattering and TEM analyses, and the active areas were determined by CO adsorption. The materials showed similar particle sizes and different morphological characteristics. The performance of the supported alloys for methanol electrooxidation was evaluated by linear sweep voltammetry experiments and curves of cell potential vs. current density in a single direct methanol fuel cell. It is shown that the difference in the morphology of the catalysts in nano- and microscale is the main effect in the different performances. © 2003 Elsevier Ltd. All rights reserved. 48 25-26 3869 3878 Wasmus, S., Kuver, A., (1999) J. Electroanal. Chem., 461, p. 14 Kordesch, K., Simader, G., (1996) Fuel Cells and their Applications, , Weinheim: VCH Gasteiger, H.A., Markovic, N.M., Ross P.N., Jr., (1995) J. Phys. Chem., 99, p. 8290 Watanabe, M., Motoo, S., (1975) J. Electroanal. Chem., 60, p. 267 Hamnett, A., (1999) Interfacial Electrochemistry: Theory, Experiment and Applications, , Wieckowski A. New York: Marcel Dekker (Chapter 47) Iwasita, T., (2002) Electrochim. Acta, 47, p. 3663 McBreen, J., Mukerjee, S., (1995) J. Electrochem. Soc., 142, p. 3399 Buatier de Mongeot, F., Scherer, M., Gleich, M., Kopatzki, E., Behm, R.J., (1998) Surf. Sci., 411, p. 249 Sriramulu, S., Jarvi, T.D., Stuve, E.M., (1999) Interfacial Electrochemistry: Theory, Experiment and Applications, , Wieckowski A. New York: Marcel Dekker (Chapter 44) Watanabe, M., Uchida, M., Motoo, S., (1987) J. Electroanal. Chem., 229, p. 395 Radmilovic, V., Gasteiger, H.A., Ross P.N., Jr., (1995) J. Catal., 154, p. 98 Alerasool, S., Gonzalez, R.D., (1990) J. Catal., 124, p. 204 Bonnemann, H., Brinkmann, R., Brijoux, W., Dinjus, E., Joussen, T., Korall, B., (1991) Angew. Chem. Int. Ed. Engl., 30, p. 804 Gonzalez, E.R., Ticianelli, E.A., Pinheiro, A.L.N., Perez, J., Brazilian Patent, INPI-SP No. 00321, 1997Goodenough, J.B., Hamnett, A., Kennedy, B.J., Manoharan, R., Weeks, S.A., (1990) Electrochim. Acta, 35, p. 199 Frelink, T., Visscher, W., Van Veen, J.A.R., (1995) J. Electroanal. Chem., 382, p. 65 Mukerjee, S., McBreen, J., (1998) J. Electroanal. Chem., 448, p. 163 Lizcano-Valbuena, W.H., Paganin, V.A., Gonzalez, E.R., (2002) Electrochim. Acta, 47, p. 3715 Dinh, H.N., Ren, X., Garzón, F.H., Zelenay, P., Gottesfeld, S., (2000) J. Electroanal. Chem., 491, p. 222 Nordlund, J., Roessler, A., Lindbergh, G., (2002) J. Appl. Electrochem., 32, p. 259 Christensen, P.A., Hamnett, A., Troughton, G.L., (1993) J. Electroanal. Chem., 362, p. 207 Iwasita, T., Hoster, H., John-Anacker, A., Lin, W.F., Vielstich, W., (2000) Langmuir, 16, p. 522 Goodenough, J.B., Manoharan, R., Shukla, A.K., Ramesh, K.V., (1989) Chem. Mater., 1, p. 391 Ren, X., Wilson, M.S., Gottesfeld, S., (1996) J. Electrochem. Soc., 143, pp. L13 Hogarth, M., Christensen, P.A., Hamnett, A., Shukla, A., (1997) J. Power Sources, 69, p. 113 Coutanceau, C., Lima, A., Garnier, E., Léger, J.-M., Lamy, C., (2001) Abstract of the Joint International Meeting, , ECS-ISE, San Francisco, CA, September (Abstract 325) Chrzanowski, W., Wieckowski, A., (1998) Langmuir, 14, p. 1967 Christensen, P.A., Hamnett, A., Munk, J., Troughton, G.L., (1994) J. Electroanal. Chem., 370, p. 251 Colmati F., Jr., Lizcano-Valbuena, W.H., Camara, G.A., Ticianelli, E.A., Gonzalez, E.R., (2002) J. Braz. Chem. Soc., 13, p. 474 Neto, A.O., Perez, J., Gonzalez, E.R., Ticianelli, E.A., (1999) J. New Mater. Electrochem. Syst., 2, p. 189 Neto, A.O., Perez, J., Napporn, W.T., Ticianelli, E.A., Gonzalez, E.R., (2000) J. Braz. Chem. Soc., 11, p. 39 Oliveira Neto, A., Giz, M.J., Perez, J., Ticianelli, E.A., Gonzalez, E.R., (2002) J. Electrochem. Soc., 149, pp. A272 Lizcano-Valbuena, W.H., Bortholin, E.C., Oliveira Neto, V.A., Paganin, V.A., Gonzalez, E.R., (2001) 52nd ISE Meeting Ext. Abstract 330, , Proceedings of the 200th Meeting of the Electrochemical Society, San Francisco, CA Aricò, A.S., Creti, P., Modica, E., Monforte, G., Baglio, V., Antonucci, V., (2000) Electrochim. Acta, 45, p. 4319 Takasu, Y., Fujiwara, T., Murakami, Y., Sasaki, K., Oguri, M., Asaki, T., Sugimoto, W., (2000) J. Electrochem. Soc., 147, p. 4421 Seddon, E.A., Seddon, K.R., (1984) The Chemistry of Ruthenium, , New York: Elsevier Paganin, V.A., Ticianelli, E.A., Gonzalez, E.R., (1996) J. Appl. Electrochem., 26, p. 297 Roth, C., Martz, N., Fuess, H., (2001) Phys. Chem. Chem. Phys., 3, p. 315 Chu, D., Gilman, S., (1996) J. Electrochem. Soc., 143, p. 1685 Gasteiger, H.A., Ross P.N., Jr., Cairns, E.J., (1993) Surf. Sci., 293, p. 67 Aricò, A.S., Creti, P., Antonucci, P.L., Cho, J., Kim, H., Antonucci, V., (1998) Electrochim. Acta, 43, p. 3719