The interface between Au(1 0 0) and 1-butyl-3-methyl-imidazolium-bis(trifluoromethylsulfonyl)imide

Claus Müller, Soma Vesztergom, T. Pajkossy, Timo Jacob

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The electrochemical interface of Au(1 0 0) and an ionic liquid, BMITf2N, has been characterized by cyclic voltammetry, electrochemical impedance spectroscopy and in situ STM with the aim to compare this particular electrochemical system with the Au(1 0 0)|BMIPF6 electrode. It is demonstrated that the two systems share the same electrochemical features: the capacitance spectra around the pztc show a double-arc structure on the complex plane, and the high frequency capacitance limits are practically the same in both systems. The double layer rearrangement processes are very slow; they proceed with time constants of minutes. Ordered adlayers of cations and anions have been imaged by in situ STM.

Original languageEnglish
Pages (from-to)218-225
Number of pages8
JournalJournal of Electroanalytical Chemistry
Volume737
DOIs
Publication statusPublished - Jan 15 2015

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Imides
Capacitance
Ionic Liquids
Electrochemical impedance spectroscopy
Ionic liquids
Cyclic voltammetry
Anions
Cations
Negative ions
Positive ions
Electrodes

Keywords

  • Capacitance
  • Double layer
  • Impedance
  • In-situ
  • Ionic liquid
  • Potential of zero charge
  • STM

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

Cite this

The interface between Au(1 0 0) and 1-butyl-3-methyl-imidazolium-bis(trifluoromethylsulfonyl)imide. / Müller, Claus; Vesztergom, Soma; Pajkossy, T.; Jacob, Timo.

In: Journal of Electroanalytical Chemistry, Vol. 737, 15.01.2015, p. 218-225.

Research output: Contribution to journalArticle

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