Research Article
Effect of Surface Composition on Electrochemical Oxidation Reaction of Carbon Monoxide and Ethanol of PtxRh1−x Solid Solution Electrodes
Figure 4
CO stripping voltammograms (solid line: 1st cycle, dashed line: 2nd cycle) of (a) Pt and Rh and (b) Pt0.75Rh0.25, Pt0.50Rh0.50, and Pt0.25Rh0.75 solid solution electrodes. (c) Onset potentials for the CO oxidation reaction as a function of Pt content. Cyclic voltammograms (dashed line: before CO stripping, solid line: after CO stripping) of (d) Pt0.75Rh0.25, (e) Pt0.50Rh0.50, and (f) Pt0.25Rh0.75 solid solution electrodes. Electrolyte: Ar-saturated 0.1 M HClO4 aqueous solution.
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