| Full text | |
| Author(s): |
Brandalise, Michele
[1]
;
Tusi, Marcelo Marques
[1]
;
Piasentin, Ricardo Marcelo
[1]
;
Linardi, Marcelo
[1]
;
Spinace, Estevam Vitorio
[1]
;
Oliveira Neto, Almir
[1]
Total Authors: 6
|
| Affiliation: | [1] CNEN SP, IPEN, BR-05508900 Sao Paulo - Brazil
Total Affiliations: 1
|
| Document type: | Journal article |
| Source: | International Journal of Electrochemical Science; v. 5, n. 1, p. 39-45, JAN 2010. |
| Web of Science Citations: | 16 |
| Abstract | |
PtRu/C (50:50) and PtRuBi/C (50:40:10) electrocatalysts were prepared by borohydride reduction using H(2)PtCl(6)center dot 6H(2)O, RuCl(3)center dot xH(2)O and Bi(NO(3))(3)center dot 5H(2)O as metals sources and Vulcan XC72 as support. The borohydride solution was added in two different ways: drop by drop and rapid addition of all the solution. The obtained electrocatalysts were characterized by EDX, XRD and cyclic voltammetry. The electro-oxidation of ethanol was studied by cyclic voltammetry and chronoamperometry at room temperature and on a single cell of a direct ethanol fuel cell (DEFC) at 100 degrees C. PtRuBi/C electrocatalysts showed superior performance for ethanol electro-oxidation than PtRu/C electrocatalysts prepared in a similar way. However, PtRuBi/C electrocatalyst prepared by rapid addition of the borohydride solution showed superior performance for ethanol electro-oxidation at room temperature, while PtRuBi/C electrocatalyst prepared by addition drop by drop of borohydride solution showed superior performance on DEFC at 100 degrees C. (AU) | |
| FAPESP's process: | 07/07898-1 - Preparation and characterization of PtRu/C + rare earth, PtSn/C + Rare earth electrocatalysts for direct ethanol fuel cell |
| Grantee: | Almir Oliveira Neto |
| Support Opportunities: | Regular Research Grants |