Use of PtAu/C electrocatalysts toward formate oxidation: electrochemical and fuel cell considerations
Carregando...
Data
Data de publicação
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
Materials for Renewable and Sustainable Energy
ODS
Exportar
Resumo
This study reports the use of PtAu/C electrocatalysts
with different atomic ratios (90:10, 70:30 and
50:50) supported on Vulcan XC 72 carbon and prepared by
the sodium borohydride method toward formate electrooxidation
in alkaline media. The materials were characterized
by X-ray diffraction, showing peaks characteristics
of Pt and Au face-centered-cubic structures, and also by
transmission electron micrographs that show the nanoparticles
well dispersed on carbon and a mean particle size
between 4 and 5 nm for all electrocatalysts. Electrochemical
experiments show PtAu/C as promising catalysts
toward formate oxidation, while single cell experiments
reveal PtAu/C 90:10 as the best material since it provides a
power density higher than Pt/C. The incorporation of Au
could increase formate oxidation for more than one reason:
(i) a facilitated rupture of C–H bond; (ii) the Au/oxide
interface or (iii) by regenerating active sites.
Como referenciar
SILVA, SIRLANE G. da; SILVA, JULIO C.M.; BUZZO, GUILHERME S.; NETO, ALMIR O.; ASSUMPÇAO, MONICA H.M.T. Use of PtAu/C electrocatalysts toward formate oxidation: electrochemical and fuel cell considerations. Materials for Renewable and Sustainable Energy, v. 5, n. 15, p. 1-8, 2016. DOI: 10.1007/s40243-016-0079-8. Disponível em: http://repositorio.ipen.br/handle/123456789/27008. 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.