Polyoxometalate-modified carbon nanotubes: New catalyst support for methanol electro-oxidation

被引：137

作者：

Pan, Dawei ^{[1
]}

Chen, Jinhua ^{[1
]}

Tao, Wenyan ^{[1
]}

Nie, Lihua ^{[1
]}

Yao, Shouzhuo ^{[1
]}

机构：

[1] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chembiosensing & Chemometr, Changsha 410082, Peoples R China

来源：

LANGMUIR | 2006年 / 22卷 / 13期

关键词：

D O I：

10.1021/la053171w

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new catalyst support, polyoxometalate-modified carbon nanotubes, is presented in this paper through the chemisorption between polyoxometalate and carbon. Pt and Pt-Ru nanoparticles were electrochemically deposited on polyoxometalate-modified carbon nanotubes electrodes, and their electrocatalytic properties for methanol electrooxidation are investigated in detail. Due to the unique electrical properties of carbon nanotubes and the excellent redox properties and the high protonic conductivity of polyoxometalate, for the similar deposition charge of Pt and Pt-Ru catalysts, 1.4 times larger exchange current density, 1.5 times higher specific activity, and better cycle stabilities can be obtained at polyoxometalate-modified carbon nanotube electrodes as compared to the electrodes without polyoxometalate modification. These results show that polyoxometalate-modified carbon nanotubes as a new catalyst support have good potential application in direct methanol fuel cells.

引用

页码：5872 / 5876

页数：5

共 43 条

[21] Homogeneous and controllable Pt particles deposited on multi-wall carbon nanotubes as cathode catalyst for direct methanol fuel cells [J].