Carbon supported hybrids nanostructures PtSn with CeO2 nanorods for Direct Ethanol Fuel Cells
Carregando...
Data
Data de publicação:
2018
Autores IPEN
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
É parte de
REUNIAO ANUAL DA SOCIEDADE BRASILEIRA DE QUIMICA: CONSTRUINDO O AMANHA, 41.
Exportar
Resumo
New energetic sources have been the focus of current researches, including on fuel cells. This device has as
its operating principle the conversion of chemical energy into electrical energy, making possible the use of
renewable energy sources [1]. In the fuel cells operation are applied nanostructured electrocatalysts capable
of oxidizing organic molecules such as ethanol [2]. This work was carried out using PtSn-based
electrocatalysts with ceria nanorods (CeO2), synthesized by chemical reduction method via sodium
borohydride [2], and supported on carbon Vulcan XC 72 (20% w/w). The synthesized materials have the
following mass metal ratios: Pt/C; Pt3Sn1/ C and Pt3Sn1_20%NR/ C, with % of the Pt3Sn1 load replaced by
ceria nanorods in the last nanomaterial, in order to reduce the costs of noble metals such as platinum. The
evaluation of the activity for ethanol oxidation is given by polarization and power density curves, according to
Figure 1. From the polarization curve it was observed that the Pt3Sn1_20%NR/ presented higher open circuit
potential value (572 mV), and power density higher than the Pt/C composite material. The Pt3Sn1/C material
presented a higher value of power density related to the others, but Pt3Sn1_20%NR/C generated a power
density for ethanol oxidation relatively close to the best activity material, by the supply of oxygenated species
improved the electrocatalytic activity for CO oxidation, making its application possible.
Como referenciar
GENTIL, TUANI C.; PARREIRA, LUANNA S.; SOUZA, FELIPE M. de; PINHEIRO, VICTOR S.; NANDENHA, JULIO; OLIVEIRA NETO, ALMIR; SANTOS, MAURO C. dos. Carbon supported hybrids nanostructures PtSn with CeO2 nanorods for Direct Ethanol Fuel Cells. In: REUNIAO ANUAL DA SOCIEDADE BRASILEIRA DE QUIMICA: CONSTRUINDO O AMANHA, 41., 21-24 de maio, 2018, Foz do Iguaçu, PR. Resumo... São Paulo: Sociedade Brasileira de Química, 2018. Disponível em: http://repositorio.ipen.br/handle/123456789/29719. Acesso em: 24 Apr 2024.
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.