EQCM measurement of Ag (I) /Ag reaction in an amide-type room-temperature ionic liquid

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Abstract

Electrodeposition of silver was investigated using an impedance technique (separately excited, passive technique) electrochemical quartz crystal microbalance (EQCM) in a room-temperature ionic liquid. The mass changes during silver deposition and dissolution were observed with the current efficiencies of nearly 100% during potential sweep, constant potential step, and constant current step experiments. The product of the viscosity and density of the electrolyte near the electrode, νLρL, can be estimated by the resonance resistance, which can be monitored simultaneously with the resonance frequency. The change in the νLρ L value during silver deposition was consistent with the change in the calculated concentration of Ag(I) near the electrode. During the outer-sphere electron-transfer reaction between ferrocenium and ferrocene, no significant changes in the mass and the Lρ L value were observed.

Original languageEnglish
Pages (from-to)D503-D507
JournalJournal of the Electrochemical Society
Volume156
Issue number11
DOIs
Publication statusPublished - 2009 Oct 13

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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