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PtRu–WO3 nanostructured alloy electrode for use in thin-film fuel cells

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5 Author(s)
Park, Kyung-Won ; Department of Materials Science and Engineering and Engineering and Research Center for Energy Conversion and Storage, Kwangju Institute of Science and Technology (K-JIST), Kwangju 500-712, Korea ; Ahn, Kwang-Soon ; Choi, Jong-Ho ; Nah, Yoon-Chae
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A PtRu–WO3 nanostructured alloy electrode consisting of alloy nanophases and amorphous tungsten oxide for use in thin-film fuel cells was designed and fabricated using a multigun sputtering system with Pt and Ru metal and a tungsten oxide target. Alloy formation and the presence of nanophases in an amorphous tungsten oxide phase was confirmed by x-ray diffraction and transmission electron microscopy, respectively. The nanostructured alloy electrode, PtRu–WO3 showed the best performance in methanol electro-oxidation because of the presence of the alloy nanophases when compared to a Pt and PtRu thin-film electrode. © 2003 American Institute of Physics.

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Applied Physics Letters  (Volume:82 ,  Issue: 7 )