Tin-oxide-coated single-walled carbon nanotube bundles supporting platinum electrocatalysts for direct ethanol fuel cells

被引：48

作者：

Hsu, Ryan S. ^{[1
]}

Higgins, Drew ^{[1
]}

Chen, Zhongwei ^{[1
]}

机构：

[1] Univ Waterloo, Waterloo Inst Sustainable Energy, Waterloo Inst Nanotechnol, Dept Chem Engn, Waterloo, ON N2L 3G1, Canada

来源：

NANOTECHNOLOGY | 2010年 / 21卷 / 16期

基金：

加拿大自然科学与工程研究理事会;

关键词：

CATALYSTS; ELECTROOXIDATION; OXIDATION; NANOPARTICLES; SN; ELECTRODES; SURFACE; PTRU/C; RU;

D O I：

10.1088/0957-4484/21/16/165705

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Novel tin-oxide (SnO2)-coated single-walled carbon nanotube (SWNT) bundles supporting platinum (Pt) electrocatalysts for ethanol oxidation were developed for direct ethanol fuel cells. SnO2-coated SWNT (SnO2-SWNT) bundles were synthesized by a simple chemical-solution route. SnO2-SWNT bundles supporting Pt (Pt/SnO2-SWNTs) electrocatalysts and SWNT-supported Pt (Pt/SWNT) electrocatalysts were prepared by an ethylene glycol reduction method. The catalysts were physically characterized using TGA, XRD and TEM and electrochemically evaluated through cyclic voltammetry experiments. The Pt/SnO2-SWNTs showed greatly enhanced electrocatalytic activity for ethanol oxidation in acid medium, compared to the Pt/SWNT. The optimal SnO2 loading of Pt/SnO2-SWNT catalysts with respect to specific catalytic activity for ethanol oxidation was also investigated.

引用

页数：5

共 31 条

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