期刊
IONICS
卷 16, 期 1, 页码 91-95出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-009-0396-3
关键词
PtSnRh/C electrocatalyst; Alcohol-reduction process; Ethanol oxidation; Direct ethanol fuel cell
资金
- MCT-ProH2
- CNPq
- FAPESP [07/07898-1]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [07/07898-1] Funding Source: FAPESP
PtRh/C (90:10), PtRh/C (50:50), PtSn/C (50:50), and PtSnRh/C (50:40:10) electrocatalysts were prepared by an alcohol-reduction process using ethylene glycol as solvent and reduction agent and Vulcan Carbon XC72 as supports. The electrocatalysts were characterized by energy-dispersive X-ray analysis, X-ray diffraction, and transmission electron microscopy. The electro-oxidation of ethanol was studied by cyclic voltammetry chronoamperometry at room temperature and on a single cell of a direct ethanol fuel cell at 100 A degrees C. Cyclic voltammetry and chronoamperometry experiments showed that PtSnRh/C and PtSn/C electrocatalysts have similar performance for ethanol oxidation at room temperature, while the activity of PtRh/C electrocatalysts was very low. At 100 A degrees C on a single cell, PtSnRh/C showed superior performance compared to PtSn/C and PtRh/C electrocatalysts.
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