Electro-oxidation of methanol and ethanol on Pt-Ru/C and Pt-Ru-Mo/C electrocatalysts prepared by Bonnemann's method

被引：96

作者：

Neto, AO

Franco, EG

Aricó, E

Linardi, M ^{[1
]}

Gonzalez, ER

机构：

[1] Inst Pesquisa Energet & Nucl, Ctr Ciencia & Tecnol Mat, Lab Celulas Combustivel PEM, Travessa R, SP, Brazil

[2] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2003年 / 23卷 / 15期

关键词：

catalyst; electrocatalysis; fuel cell; platinum; voltammetry;

D O I：

10.1016/S0955-2219(03)00310-8

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Pt-Ru/C and Pt-Ru-Mo/C electrocatalysts prepared by Bonnemann's method have been Studied as porous thin films on high surface area carbon electrodes, in order to evaluate their electroactivity on CO desorption in PEM fuel cells. Electrode precursor powders with and without thermal treatment were considered for comparison. The morphology of these precursor powders was characterized in a high-resolution transmission electron microscope equipped with a nano-EDX device and also by XPS measurements. Cyclic voltammetry showed that addition of Mo in the well-established Pt/Ru system is very promising for methanol and ethanol oxidation. Infrared spectroscopic measurements revealed that a thermal treatment in a hydrogen atmosphere of the electrode precursor material was necessary to enhance the efficiency. In order to compare the electroactivity of different catalysts a normalization procedure based on the amount of Pt was used. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：2987 / 2992

页数：6

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