Electro-oxidation of ethanol using PtSnRh/C electrocatalysts prepared by an alcohol-reduction process

被引：57
作者：
Spinace, E. V. [1 ]
Dias, Ricardo R. [1 ]
Brandalise, Michele [1 ]
Linardi, Marcelo [1 ]
Oliveira Neto, Almir [1 ]
机构：
[1] IPEN CNEN SP, BR-05508000 Sao Paulo, Brazil
来源：
IONICS | 2010年 / 16卷 / 01期
基金：
巴西圣保罗研究基金会;
关键词：
PtSnRh/C electrocatalyst; Alcohol-reduction process; Ethanol oxidation; Direct ethanol fuel cell; FUEL-CELLS; CATALYSTS; METHANOL; OXIDATION; RH;
D O I：
10.1007/s11581-009-0396-3
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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.
引用
收藏
页码：91 / 95
页数：5
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