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

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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.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2003-11
Language
English
Article Type
Article
Keywords

MESOPOROUS SILICA SBA-15; PLATINUM NETWORKS; PERFORMANCE; OXIDATION; ELECTROOXIDATION; CATALYSTS; ALLOYS; ELECTROCATALYST; ABSORPTION; TEMPLATE

Citation

JOURNAL OF POWER SOURCES, v.124, no.24, pp.420 - 425

ISSN
0378-7753
URI
http://hdl.handle.net/10203/250641
Appears in Collection
CBE-Journal Papers(저널논문)
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