Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6662746 | Journal of Electroanalytical Chemistry | 2014 | 8 Pages |
Abstract
New electrochemical and in situ surface X-ray diffraction results on Cu(111) in chloride containing acidic electrolytes (pH 1-3) are presented. Electrochemical characterization by cyclic voltammetry and current transients was carried out in different aqueous electrolytes as a function of the pH and the chloride concentration of the solution. The electrochemical data indicate coadsorption of chloride with an oxygenated species in an intermediate potential range, followed by a complete replacement of the oxygenated species by a close-packed chloride adlayer at the positive end of the double layer regime. The slow kinetics and the X-ray scattering results suggest that the adsorption of the oxygenated species is accompanied by structural changes of the Cu surface, most probably the formation of a surface oxide layer.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
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Authors
Y. Gründer, A. Drünkler, F. Golks, G. Wijts, J. Stettner, J. Zegenhagen, O.M. Magnussen,