High pressure organic colloid method for the preparation of high performance carbon nanotube-supported Pt and PtRu catalysts for fuel cell applications

被引：0
作者：
YanNi Wu
ShiJun Liao
KateNing Wang
Min Chen
Viola Birss
机构：
[1] South China University of Technology,College of Chemistry
[2] University of Calgary,Department of Chemistry
来源：
Science in China Series E: Technological Sciences | 2010年 / 53卷
关键词：
direct methanol fuel cell; hydrogen fuel cells; anodes; catalysts; methanol oxidation; carbon nanotubes; organic colloidal method;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Highly dispersed, high performance Pt and PtRu catalysts, supported on multiwalled carbon nanotubes (CNTs), were prepared by a high pressure organic colloid method. The particle sizes of the active components were as small as 1.2 nm for Pt and 1.1 nm for PtRu, and the active Pt surface areas were 295 and 395 m2/g, respectively. The catalysts showed very high activities toward the anodic oxidation of methanol, evaluated by cyclic voltammetry, being up to 4 times higher than that of commercial Johnson Matthey Hispec 2000 Pt/XC-72R and 5 times better than Hispec 5000 PtRu/XC-72R catalysts. In a full air/hydrogen fuel cell, a membrane-electrode assembly prepared using our Pt/CNT and PtRu/CNT catalysts showed 50% and 100% higher performances than those prepared with commercial Johnson Matthey Pt/XC-72R and PtRu/XC-72R catalysts for the same Pt loading and operating conditions.
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页码：264 / 271
页数：7
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