Journal
ELECTROCHIMICA ACTA
Volume 345, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2020.136167
Keywords
Ionogel (IO); Ionic liquid (IL); Current rectification; electrochemical window (ECW); Interdigitated electrodes (IDEs)
Categories
Funding
- Basque Government under the Elkartek Program (MICRO4FAB) [KK-2016/00030]
- University of Navarra
- Gobierno de Espana, Ministerio de Economia y Competitividad [BIO2016-80417-P]
- Gobierno Vasco Dpto. Educacion [IT1271-19]
Ask authors/readers for more resources
The electrical and electrochemical properties of two ionogel materials based on the poly(N-isopropylacrylamide) gel with 1-ethyl-3-methylimidazolium ethyl sulfate and trihexyltetradecylphosphonium dicyanamide ionic liquids are investigated. The current-voltage curves show a current rectification for both ionogels and ionic liquids after inducing ion adsorption on gold electrode surface. The polymer matrix of the ionogels mitigates ion adsorption, resulting in lower rectification ratios when comparing with the corresponding ionic liquids. The stability and the electrochemical window (ECW) of the ionogels are calculated from cyclic voltammograms and compared with the ones obtained for the ionic liquids. The widest electrochemical window is achieved by the phosphonium ionic liquid and its ionogel. Finally, the effect of the absorbed atmospheric water and the mutual coefficient diffusion of the redox active species inside the IO is calculated. This work widens the knowledge of the behavior of ionogel materials characterized on gold electrode interfaces. (C) 2020 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available