Electro-oxidation of ethanol using PtRuBi/C electrocatalyst prepared by borohydride reduction

被引：20
作者：
Brandalise, M. [1 ]
Verjulio-Silva, R. W. R. [1 ]
Tusi, M. M. [1 ]
Correa, O. V. [1 ]
Farias, L. A. [1 ]
Linardi, M. [1 ]
Spinace, E. V. [1 ]
Oliveira Neto, A. [1 ]
机构：
[1] IPEN CNEN SP, BR-05508000 Sao Paulo, Brazil
来源：
IONICS | 2009年 / 15卷 / 06期
基金：
巴西圣保罗研究基金会;
关键词：
PtRuBi/C electrocatalyst; Borohydride reduction; Ethanol oxidation; Direct ethanol fuel cell; FUEL-CELLS; ANODE CATALYSTS; PTBI; NANOPARTICLES; OXIDATION; CO;
D O I：
10.1007/s11581-009-0340-6
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：
Pt/C, PtRu/C, PtBi/C, and PtRuBi/C electrocatalysts (20 wt.% metal loading) were prepared by borohydride reduction using H2PtCl6 center dot 6H(2)O, RuCl3 center dot xH(2)O, and Bi(NO3)(3)center dot 5H(2)O as metal sources and Vulcan XC 72 as support. The electrocatalysts were characterized by energy-dispersive X-ray analysis, X-ray diffraction, and thermogravimetric analysis. The electro-oxidation of ethanol was studied in sulfuric acid solution by cyclic voltammetry and chronoamperometry. The electrochemical studies showed that PtRuBi/C (50:40:10) electrocatalyst has superior performance for ethanol electro-oxidation at room temperature compared to the other electrocatalysts. Preliminary tests at 100 A degrees C on a single direct ethanol fuel cell also confirm the results obtained by electrochemical techniques.
引用
收藏
页码：743 / 747
页数：5
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