| Texto completo | |
| Autor(es): |
Fontes, E. H.
[1]
;
da Silva, Sirlane G.
[1]
;
Spinace', E. V.
[1]
;
Neto, A. O.
[1]
;
de Souza, R. F. B.
[1, 2]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] IPEN CNEN SP, Inst Pesquisas Energet & Nucl, Av Prof Lineu Prestes, 2242 Cidade Univ, BR-05508900 Sao Paulo, SP - Brazil
[2] Univ Fed Amazonas, Dept Quim, Lab Eletroquim & Energia, Av Gen Rodrigo Octavio 6200, Coroado 1, BR-69077000 Manaus, AM - Brazil
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ELECTROCATALYSIS; v. 7, n. 4, p. 297-304, JUL 2016. |
| Citações Web of Science: | 4 |
| Resumo | |
Anion exchange membrane fuel cell is a new chance to produce a functional and portable fuel cell; however, the studies are still at an early stage with few reports regarding the AEMFC. PtRh/C electrocatalysts with different Pt:Rh atomic ratios were prepared by an alcohol reduction process. X-ray diffraction patterns for all PtRh/C materials indicated no shift in Pt(fee) peaks showing that Rh did not incorporated into Pt lattice; however, the analysis of lattice parameter showed that some Pt atoms are added to Rh(fee) structure. The mean particle sizes were in the range of 4-5 nm. Electrochemical experiments showed that PtRh/C electrocatalyst with Pt:Rh atomic ratio of 70:30 had superior performance exhibiting a current density of 5.0 mA mg(metal)(-1). From in situ ATR-FTIR experiments, it was observed that PtRh/C electrocatalyst with Pt:Rh atomic ratio of 70:30 produced more acetate ions than other ones, while the material prepared with Pt:Rh atomic ratio of 50:50 was more selective to CO2 as observed in acid media. (AU) | |
| Processo FAPESP: | 14/50279-4 - Brasil Research Centre for Gas Innovation |
| Beneficiário: | Julio Romano Meneghini |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Centros de Pesquisa Aplicada |
| Processo FAPESP: | 14/09087-4 - Estudos sobre o uso do bioetanol em células a combustível do tipo PEMFC e SOFC |
| Beneficiário: | Marcelo Linardi |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |