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Formation, stability, and dissolution of clusters on electrodes monitored by in-situ STM

✍ Scribed by N. Breuer; U. Stimming; R. Vogel

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
973 KB
Volume
40
Category
Article
ISSN
0013-4686

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✦ Synopsis

A comparative investigation of the formation, stability, and dissolution of copper and silver clusters on polycrystalline gold electrodes with in-situ STM was conducted in order to access three closely related problems in parallel. The first topic is the dynamic behaviour of metal clusters in electrochemical environments.

The second is the relation between macroscopic kinetic parameters and the structural dynamics on the nm-scale. These two topics are directly connected to the question, whether and how the STM tip affects the local electrochemical kinetics.

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underpotential deposition on Au(llO), in pure and Cll containing H,SO, solution, was investigated by in situ STM. In the absence of Cl-the general surface topography and the (1 x 1) structure of the nonreconstructed surface are maintained over the entire upd potential range. This is interpreted as f