Electrocompression of the Au(111) surface layer during Au electrodeposition

被引：27

作者：

Ayyad, AH

Stettner, J

Magnussen, OM

机构：

[1] Univ Kiel, Inst Expt, D-24098 Kiel, Germany

[2] Univ Kiel, Angewandte Phys, D-24098 Kiel, Germany

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.94.066106

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In situ grazing-incidence x-ray diffraction studies of reconstructed Au(111) electrodes in aqueous electrolyte solutions are presented, which reveal a significantly increased compression of the Au surface layer during Au electrodeposition as compared to Au(111) surfaces under ultrahigh vacuum conditions or in the Au-free electrolyte. The compression increases towards more negative potentials, reaching 5.3% at the most negative potentials studied. It may be explained within a simple thermodynamic model by a release of potential-induced surface stress.

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页码：1 / 4

页数：4

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