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In situ STM study of zinc electrodeposition on Au(111) from the ionic liquid 1-ethyl-3-methylimidazolium trifluoromethylsulfonate

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Abstract

The electrodeposition of Zn on Au(111) was investigated with cyclic voltammetry (CV) and in situ scanning tunneling microscopy (STM) in the air and water stable ionic liquid 1-ethyl-3-methylimidazolium trifluoromethylsulfonate ([EMIm]TfO) with a Zn(TfO)2 concentration of 0.2 M. It has been found that the structure [EMIm]TfO/Au(111) is very complex. Furthermore, the addition of Zn(TfO)2 changes the interfacial structure significantly. The first STM-probed Zn islands appear at +0.3 V, and their growth leads to the formation of a thin zinc layer. A bulk deposition of Zn is obtained with in situ STM at −0.1 V. Furthermore, in situ STM reveals that the deposition of Zn is accompanied by the formation of Au-Zn surface alloys.

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Acknowledgments

Financial support by the BMBF project AKUZIL and by EFZN Goslar is gratefully acknowledged.

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Authors and Affiliations

  1. Institute of Electrochemistry, Clausthal University of Technology, Arnold-Sommerfeld-Strasse 6, 38678, Clausthal-Zellerfeld, Germany

    Zhen Liu, Natialia Borisenko, Sherif Zein El Abedin & Frank Endres

  2. Electrochemistry and Corrosion Laboratory, National Research Centre, Dokki, Cairo, Egypt

    Sherif Zein El Abedin

Authors
  1. Zhen Liu
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  2. Natialia Borisenko
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  3. Sherif Zein El Abedin
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  4. Frank Endres
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Correspondence to Frank Endres.

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Liu, Z., Borisenko, N., Zein El Abedin, S. et al. In situ STM study of zinc electrodeposition on Au(111) from the ionic liquid 1-ethyl-3-methylimidazolium trifluoromethylsulfonate. J Solid State Electrochem 18, 2581–2587 (2014). https://doi.org/10.1007/s10008-014-2516-x

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  • DOI: https://doi.org/10.1007/s10008-014-2516-x

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