Novel hollow PtRu nanospheres supported on multi-walled carbon nanotube for methanol electrooxidation

被引：31

作者：

Guo, Dao-Jun ^{[1
,2
]}

Zhao, Long ^{[1
]}

Qiu, Xin-Ping ^{[1
]}

Chen, Li-Quan ^{[1
]}

Zhu, Wen-Tao ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Chem, Key Lab Organ Optoelect & Mol Engn, Beijing 100084, Peoples R China

[2] Qufu Normal Univ, Coll Chem Sci, Qufu 273165, Shandong, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2008年 / 177卷 / 02期

基金：

中国博士后科学基金;

关键词：

PtRu nanospheres; hollow; methanol oxidation; electrocatalyst;

D O I：

10.1016/j.jpowsour.2007.11.087

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A multi-walled carbon nanotube supported hollow PtRu nanosphere electrocatalysts was prepared at room temperature in a homogeneous solution employing cobalt metal nanoparticles as sacrificial templates. Transmission electron micrograph (TEM) measurements showed that carbon nanotube supported PtRu nanospheres were coreless, and composed of discrete PtRu nanoparticles with the crystallite size of about 2.1 nm. X-ray diffraction (XRD) results showed that the hollow PtRu nanospheres had a face-centered cubic structure. Electrochemical measurements demonstrated that the carbon nanotube supported hollow PtRu nanosphere electrocatalysts exhibited enhanced electrocatalytic performance for methanol oxidation compared with carbon nanotube supported solid PtRu nanoparticles and commercial E-TEK PtRu/C (20 wt%) catalysts, which is crucial for anode electrocatalysis in direct methanol fuel cells (DMFCs). (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：334 / 338

页数：5

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