Electroreduction of oxygen on multi-walled carbon nanotubes modified highly oriented pyrolytic graphite electrodes in alkaline solution

被引：88

作者：

Jurmann, Gea ^{[1
]}

Tammeveski, Kaido ^{[1
]}

机构：

[1] Univ Tartu, Inst Phys Chem, EE-51014 Tartu, Estonia

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2006年 / 597卷 / 02期

关键词：

oxygen reduction; electrocatalysis; carbon nanotubes; highly oriented pyrolytic graphite; rotating disk electrode;

D O I：

10.1016/j.jelechem.2006.09.002

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The electrochemical reduction of oxygen has been studied on multi-walled carbon nanotubes (MWCNTs) modified highly oriented pyrolytic graphite (HOPG) electrodes in 0.1 M KOH solution using the rotating disk electrode (RDE) technique. The oxygen reduction behaviour of MWCNTs/HOPG electrodes of various modifications was compared. Electrochemical studies indicate that the MWCNTs/HOPG electrodes show a remarkable electrocatalytic activity towards O-2 reduction in alkaline media. The number of electrons transferred per O-2 molecule was a function of potential and it increased up to four at high negative potentials. The O-2 reduction behaviour of MWCNTs/HOPG electrodes using oxidatively treated MWCNTs was also studied. The oxidative pre-treatment of MWCNTs did not change their electrocatalytic properties for oxygen reduction in alkaline solution to a noticeable degree. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：119 / 126

页数：8

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[1] Single-wall carbon nanotube paste electrodes: a comparison with carbon paste, platinum and glassy carbon electrodes via cyclic voltammetric data [J].