Electrochemistry
Online ISSN : 2186-2451
Print ISSN : 1344-3542
ISSN-L : 1344-3542
Communications
Determination of Surface Compositions of Pt-Ru Alloy Thin Films Using Cu Stripping Voltammetry
Hirohisa YAMADA, Toru IKEDA, Daisuke SHIMODA, Akimasa TASAKA, Minoru INABA
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Keywords: Pt-Ru, Alloy, Surface Composition, Under Potential Deposition
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2011 Volume 79 Issue 5 Pages 357-360

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Abstract

Pure Pt, Pure Ru, and Pt-Ru alloy thin films of different compositions (Ru:Pt=0.5–2.0) were prepared by magnetron sputtering. These thin films were characterized by Cu stripping voltammetry at different deposition potentials. Furthermore, we developed a novel technique to determine the surface Ru/Pt ratio of Pt-Ru alloys using Cu stripping voltammetry. The Ru/Pt ratios calculated from Cu stripping data agreed well with those measured by EDX in the Ru/Pt range of 0.6 to 2.0.

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© 2011 The Electrochemical Society of Japan
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