FRANCO, E.G.ARICO, E.M.LINARDI, M.ROTH, C.MARTZ, N.FUESS, H.2014-11-172014-11-182015-04-012014-11-172014-11-182015-04-01FRANCO, E.G.; ARICO, E.M.; LINARDI, M.; ROTH, C.; MARTZ, N.; FUESS, H. Synthesis and characterization of eletrocatalyst powders for application in PEM fuel cells. In: ADVANCED POWDER TECHNOLOGY 3 - INTERNATIONAL LATIN-AMERICAN CONFERENCE ON POWDER TECHNOLOGY, 2rd, Nov. 26-28, 2001, Florianopolis, SC. <b>Proceedings...</b> p. 15-21. Disponível em: http://repositorio.ipen.br/handle/123456789/15355.http://repositorio.ipen.br/handle/123456789/15355The Bdnnemann method was chosen to synthesize carbon-supported Pt-Ru-Mo electrocatalyst powders, as this method leads to highly-dispersed nanoparticles with an average particle size of approximately 2 nm. Structural characterization of the resulting catalysts was done by the following techniques: X-rays fluorescence analysis (XFA) and nanosize-energy dispersive X-rays analysis (nano-EDX) to obtain information about noble metal loading and composition as well as X-rays diffraction (XRD) and high resolution transmission electron microscopy (HRTEM) to determine structure, dispersion and crystallite size of the nanoparticles. X-rays photoelectron spectroscopy (XPS) was applied to detect amorphous phases and to determine the oxidation states of Pt, Ru and Mo. The morphology of membrane electrode assemblies, prepared by a spraying technique, was checked by scanning electron microscopy (SEM). For the determination of the electrocatalytic activity E/i curves in single cell arrangements were recorded using both H2/CO mixtures and methanol as feed gases.15-21openAccessfuel cellsproton exchange membrane fuel cellselectrocatalystsplatinumrutheniummolybdenumsynthesisparticle sizetransmission electron microscopyphotoelectron spectroscopymethanoloxidationTexto completo de eventohttps://orcid.org/0000-0003-0105-6519