PtAu/C electrocatalysts as anodes for direct ammonia fuel cell
Carregando...
Data
Data de publicação
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
Applied Catalysis A: General
ODS
Exportar
Resumo
PtAu/C electrocatalysts prepared by borohydride reduction method with different Pt:Au atomic ratios
(50:50 and 70:30) were tested as work electrodes/anodes in electrochemical experiments and also
using a direct ammonia fuel cell (DAFC). X-ray diffraction patterns showed the formation of PtAu alloy
while transmission electron micrographs showed the particles sizes between 5.8 and 6.4 nm. PtAu/C
70:30 presented the best results showing a current density about 20% higher when compared to Pt/C
in voltammetry experiments and a power density about 60% higher than Pt/C using DAFC, while Au/C
showed practically no activity in both experiments. The best results obtained with PtAu/C (70:30) could
be explained by the electronic effect (PtAu alloy) associated with adsorbed hydroxyl species (AuOHads)
and also the lower Au-N energy adsorption.
Como referenciar
SILVA, JULIO C.M.; SILVA, SIRLANE G. da; SOUZA, RODRIGO F.B. de; BUZZO, GUILHERME S.; SPINACE, ESTEVAM V.; OLIVEIRA NETO, ALMIR; ASSUMPCAO, MONICA H.M.T. PtAu/C electrocatalysts as anodes for direct ammonia fuel cell. Applied Catalysis A: General, v. 490, p. 133-138, 2015. DOI: 10.1016/j.apcata.2014.11.015. Disponível em: http://repositorio.ipen.br/handle/123456789/23854. Acesso em: 20 Mar 2026.
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.