Pt and PtRu nanoparticles supported on N-doped carbons as electrocatalysts for methanol electro-oxidation
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2016
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BRAZILIAN MRS MEETING, 15th
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Resumo
Methanol is a liquid transportation fuel that can be produced from fossil or
renewable resources. Fuel cells employing methanol directly as fuel (Direct
Methanol Fuel Cell – DMFC) are very attractive as power source for portable,
mobile and stationary applications [1]. PtRu/C electrocatalyst has been
considered the best electrocatalyst for methanol electro-oxidation, however, its
performace is strongly dependent on the method of preparation and on the
characteristics of the carbon support. N-doped carbons with different N contents
(1, 2 and 5 wt%) were prepared by thermal treatment of carbon with urea at
800oC. Pt and PtRu nanoparticles were supported on N-doped carbons by coreduction
of Pt(IV) and Ru(III) ions using an alcohol-reduction process [2]. The
obtained materials were characterized by Energy Dispersive X-ray spectroscopy,
X-ray diffraction, Transmission electron microscopy and Cyclic Voltammetry. Pt
and PtRu nanoparticles supported on N-doped carbons showed superior
performance for methanol electro-oxidation when compared to the materials
supported on non-modified carbon and to Pt/C and PtRu/C commercial
electrocatalysts. Pt/C and PtRu/C prepared with the carbon modified with 2.5 wt%
of N content showed the best activities.
Como referenciar
PEREIRA, VIVIANE S.; SILVA, JULIO C.M.; OLIVEIRA NETO, ALMIR; SPINACE, ESTEVAM V. Pt and PtRu nanoparticles supported on N-doped carbons as electrocatalysts for methanol electro-oxidation. In: BRAZILIAN MRS MEETING, 15th, September 25-29, 2016, Campinas, SP. Abstract... São Carlos, SP: Aptor Software, 2016. p. 1490-1490. Disponível em: http://repositorio.ipen.br/handle/123456789/28071. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.