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Volume 121, 2002
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In situ video-STM studies of dynamic processes at electrochemical interfaces

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Abstract

Atomic-scale dynamic processes during Cu(100) dissolution/deposition in pure and Cu-containing 0.01 M HCl solution were studied in situ by high-speed electrochemical STM (video-STM). Direct observations of the equilibrium fluctuations at atomic kinks in the steps on the crystal surface due to the local removal/addition of atoms reveal the same anisotropic behavior found previously in Cu-free electrolytes, caused by the influence of the ordered (2 × 2) Cl adlayer on the kink structure. A first quantitative analysis of these fluctuations and interpretation in terms of a local current exchange density was attempted. In addition, observations on the nucleation of vacancy- or ad-rows at terrace corners and within the Cu steps are presented and the relevance of these processes for the macroscopic current density is discussed.

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Publication details

The article was received on 02 Jan 2002, accepted on 14 Jan 2002 and first published on 27 Jun 2002


Article type: Paper
DOI: 10.1039/B200016B
Citation: Faraday Discuss., 2002,121, 43-52
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    In situ video-STM studies of dynamic processes at electrochemical interfaces

    O. M. Magnussen, W. Polewska, L. Zitzler and R. J. Behm, Faraday Discuss., 2002, 121, 43
    DOI: 10.1039/B200016B

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