Template preparation of Pt-Ru and Pt nanowire array electrodes on a Ti/Si substrate for methanol electro-oxidation

被引：93

作者：

Zhao, Guang-Yu ^{[1
]}

Xu, Cai-Ling ^{[1
]}

Guo, Dao-Jun ^{[1
]}

Li, Hua ^{[1
]}

Li, Hu-Lin ^{[1
]}

机构：

[1] Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2006年 / 162卷 / 01期

基金：

中国国家自然科学基金;

关键词：

portable power sources; AAO/Ti/Si; Pt and Pt-Ru nanowire array electrodes; electro-catalysis; methanol oxidation;

D O I：

10.1016/j.jpowsour.2006.06.082

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：

Pt and Pt-Ru nanowire array electrodes were obtained by do (direct current) electrodeposition of Pt and Ru into the pores of an anodic aluminum oxide (AAO) template on a Ti/Si substrate. Transmission electron microscope (TEM) examination showed all the nanowires had a uniform diameter of about 30 nm. The brush shaped Pt and Pt-Ru nanowire array electrodes could be seen clearly by scanning electron microscope. Pt and Pt-Ru nanowire array electrodes gave the X-ray diffraction pattern of a face-centered cubic (fee) crystal structure. The electro-oxidation of methanol on these electrodes was investigated at room temperature using cyclic voltammetry. The results demonstrated that the alloy nanowire array electrode was catalytically more active than a pure platinum nanowire array electrode and the Pt-Ru nanowire array electrode may have good potential for applications in portable fuel cell power sources. (c) 2006 Elsevier B.V All rights reserved.

引用

页码：492 / 496

页数：5

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