Bimetallic Pt-Ru nanowire network for anode material in a direct-methanol fuel cell

被引：64

作者：

Choi, WC ^{[1
]}

Woo, SI ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, Ctr Ultramicrochem Proc Syst, Taejon 305701, South Korea

来源：

JOURNAL OF POWER SOURCES | 2003年 / 124卷 / 02期

关键词：

nanowire; fuel cell; platinum-rhuthenium; methanol electro-oxidation; mass transfer; membrane-electrode assembly;

D O I：

10.1016/S0378-7753(03)00812-7

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 new bimetallic nanostructured Pt-Ru material is synthesized in an SBA-15 nanoreactor and compared with commercial Pt-Ru black (Johnson Matthey). Transmission electron microscopic and X-ray diffraction studies of the synthesized material show that, as with a network structure, the Pt-Ru nanowires are interconnected via smaller ones. The catalytic activity (measured in cyclic voltammetry (CV) experiments) for methanol electro-oxidation on the material is lower than that for commercial Pt-Ru black at potentials below 550 mV versus the reversible hydrogen electrode. By contrast, a direct-methanol fuel cell (DMFC) in which the nanostructured material is used as an anode material shows higher performance than with Pt-Ru black, because the network structure leads to an effective mass transfer in the membrane-electrode assembly. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：420 / 425

页数：6

共 34 条

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