Proton exchange membrane fuel cell catalyst: synthesis and characterization
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2008
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INTERNATIONAL FUEL CELL SCIENCE, ENGINEERING AND TECHNOLOGY CONFERENCE, 6th
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Resumo
Fuel cells are a promising technology to deal with energy
sustainability, especially for mobility purposes the Proton
Exchange Membrane Fuel Cell and hydrogen produced from
biomass could be coupled to overcome the amount of CO2
emissions. In order to improve fuel cells performances the
search for new electrocatalysts has a great importance in this
technology the challenge for a fuel cell catalyst that is less
poisoned by CO is one of the most important field in low
temperature fuel cell developments that use alcohol and
hydrocarbons as primary fuels. In this work PtSm, PtTb, PtDy,
PtU, PtRuMo and PtRuDy systems have been synthesized by
the colloid method, investigated by the following techniques:
X-rays fluorescence analysis (XFA), X-rays powder diffraction
(XRD), X-rays photoelectron spectroscopy (XPS), scanning
electron microscopy (SEM), high resolution transmission
electron microscopy (HRTEM), cyclic voltammetry (CV) and
polarization curves (Exi). The results obtained in this work
shows that PtRuMo is the best choice for direct methanol
oxidation. For direct ethanol oxidation the higher activity was
found in PtRuDy system. PtU system was investigated and
showed an interesting behaviour in ethanol oxidation. After two
cycles of H2/O2 and ethanol/O2 the catalyst was able to reach
the initial figures on hydrogen/oxygen oxidation which means
that no degradation of the catalyst was indentified.
Como referenciar
FRANCO, EGBERTO G.; DANTAS FILHO, PAULO L.; RIBEIRO, CARLOS E.R.; BURANI, GERALDO F.; LINARDI, MARCELO. Proton exchange membrane fuel cell catalyst: synthesis and characterization. In: INTERNATIONAL FUEL CELL SCIENCE, ENGINEERING AND TECHNOLOGY CONFERENCE, 6th, June 16-18, 2008, Denver, Colorado, USA. Proceedings... p. 1-6. Disponível em: http://repositorio.ipen.br/handle/123456789/27695. Acesso em: 15 Mar 2025.
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