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- Title
Generator-collector Voltammetry at Dual-plate Gold-gold Microtrench Electrodes as Diagnostic Tool in Ionic Liquids.
- Authors
Angel Montiel, Miguel; Iniesta, Jesus; Gross, Andrew J.; Thiemann, Thies; Marken, Frank
- Abstract
Ionic liquids provide high viscosity solvent environments with interesting voltammetric characteristics and new electrochemical mechanisms. Here, a gold-gold dual-plate microtrench electrode is employed in generator-collector mode to enhance viscosity-limited currents in ionic liquids due to fast feedback within small inter-electrode gaps (5 μm inter-electrode gap, 27 μm microtrench depth) and to provide a mechanistic diagnosis tool. Three redox systems in the ionic liquid BMIm+BF4− are investigated: (i) ferrocene oxidation, (ii) oxygen reduction, and (iii) 2-phenyl-naphthyl-1,4-dione reduction. Both transient and steady state voltammetric responses are compared. Asymmetric diffusion processes, reaction intermediates, and solubility changes in the ionic liquid are revealed.
- Subjects
VOLTAMMETRY; ELECTROCHEMICAL analysis; CYCLIC voltammetry; ELECTRODES; ELECTRICAL conductors
- Publication
Electroanalysis, 2016, Vol 28, Issue 5, p1068
- ISSN
1040-0397
- Publication type
Article
- DOI
10.1002/elan.201501034