Electrocatalytic oxidation of methanol on carbon-nanotubes/graphite electrode modified with platinum and molybdenum oxide nanoparticles

被引：17

作者：

Gan Yong-ping ^{[1
]}

Huang Hui ^{[1
]}

Zhang Wen-kui ^{[1
]}

机构：

[1] Zhejiang Univ Technol, Coll Chem Engn & Mat Sci, Hangzhou 310032, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2007年 / 17卷 / 01期

基金：

中国国家自然科学基金;

关键词：

methanol oxidation; carbon nanotubes; molybdenum oxides; nanoparticles; fuel cells;

D O I：

10.1016/S1003-6326(07)60074-0

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Electrochemical codeposition and electrocatalytic properties of platinum and molybdenum oxide nanoparticles (Pt-Moo.) on carbon-nanotubes/graphite electrode for methanol oxidation were investigated. The micrograph and elemental composition of the resulting Pt-MoOx/CNTs/graphite electrode were characterized by scanning electron microscopy(SEM) and energy dispersive X-ray spectroscopy(EDS). The results show that the Pt-MoO, particles with the average size of about 50 nm are highly dispersed on the CNTs surface. The Pt-MoOx/CNTs/graphite electrode delivers excellent electrocatalytic properties for methanol oxidation. The highest mass activity(A.) reaches 264.8 A/g at the loading mass of 159.3 mu g/cm(2). This may be attributed to the small particle size and high dispersion of Pt-MoOx catalysts deposited on the CNTs surface. The kinetic analysis from electrochemical impedance spectroseopy(EIS) reveals that the existed MoQ(x) phase can improve the chemisorptive and catalytic properties for methanol oxidation.

引用

页码：214 / 219

页数：6

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