Polyoxometallate-stabilized platinum catalysts on multi-walled carbon nanotubes for fuel cell applications

被引：39

作者：

Guo, Z. P. ^{[1
,2
]}

Han, D. M. ^{[2
,3
]}

Wexler, D. ^{[2
]}

Zeng, R. ^{[2
]}

Liu, H. K. ^{[1
,2
]}

机构：

[1] Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia

[2] Univ Wollongong, Sch Mech Mat & Mechatron Engn, Wollongong, NSW 2522, Australia

[3] Sun Yat Sen Univ, Inst Optoelectron & Funct Composite Mat, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2008年 / 53卷 / 22期

关键词：

polyoxometallate; methanol oxidation; well-dispersed ultrafine nanocrystals; fuel cells;

D O I：

10.1016/j.electacta.2008.04.050

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel catalyst, Pt-PMO]2-CNT, with well-dispersed Pt nanoparticles and monolayer PM012 on multiwalled carbon nanotubes (CNTs) is reported. A polyoxometal late (PM012) was chemically adsorbed on the surface of Pt nanoparticles and on outer walls of CNTs. These effectively prevented the agglomeration of Pt nanoparticles and CNTs due to the electrostatic repulsive interactions between negatively charged PM012 monolayers. The as-prepared Pt-PM012-CNT materials show higher electrocatalytic activity, higher cycle stability, and better tolerance to poisoning species in methanol oxidation than do Pt-CNT catalysts prepared by the same method. The reasons for the improved catalytic performance of the Pt-PMO,2-CNT catalysts are discussed. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：6410 / 6416

页数：7

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