Material exploration: combinatorial optimization of ternary PtSnX (X=Ni, Ru, RH an...
| Full text | |
| Author(s): |
Fontes, E. H.
[1]
;
da Silva, Sirlane G.
[1]
;
Spinace', E. V.
[1]
;
Neto, A. O.
[1]
;
de Souza, R. F. B.
[1, 2]
Total Authors: 5
|
| Affiliation: | [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
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | ELECTROCATALYSIS; v. 7, n. 4, p. 297-304, JUL 2016. |
| Web of Science Citations: | 5 |
| Abstract | |
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) | |
| FAPESP's process: | 14/50279-4 - Brasil Research Centre for Gas Innovation |
| Grantee: | Julio Romano Meneghini |
| Support type: | Research Grants - Research Centers in Engineering Program |
| FAPESP's process: | 14/09087-4 - Studies on the use of bioethanol in proton exchange membrane and solid oxide fuel cells |
| Grantee: | Marcelo Linardi |
| Support type: | Research Projects - Thematic Grants |