Jump to main content
Jump to site search

Issue 21, 2019
Previous Article Next Article

Redox bucky gels: mixture of carbon nanotubes and room temperature redox ionic liquids

Author affiliations

Abstract

In the past few years, the design of bucky gels based on ionic liquids has been an attractive field for many applications. The present electrochemical work investigates the first redox bucky gel by cyclic voltammetry and electrochemical impedance spectroscopy. First, the synthesis of a room temperature ionic liquid named 3-TEMPO-1-methylylimidazolium-bis(trifluoromethylsulfonyl)imide (TEMPO-MeImTFSI) was reported (Tg: −31 °C). Then, a redox bucky gel was synthesized based on room temperature redox ionic liquids with carbon nanotubes at a different weight ratio. Electrochemical investigations on this new material were performed using an ultramicroelectrode (to study room temperature redox ionic liquids) and cavity microelectrodes (to study the redox bucky gel). By electrochemical impedance spectroscopy measurement, carbon nanotube percolation was determined to be about 2 wt%. At this ratio, both ionic and electrical conductivities were observed. Moreover, the mechanisms of electron transfer and mass transport inside the redox bucky gel were investigated. Using an ultramicroelectrode, the diffusion shows a succession of self-exchange reactions, named chemical diffusion. Using a cavity microelectrode, the electron transfer kinetics induced by the electro-activity of TEMPO in the bucky gel was evaluated, revealing rapid electron transfer.

Graphical abstract: Redox bucky gels: mixture of carbon nanotubes and room temperature redox ionic liquids

Back to tab navigation

Supplementary files

Publication details

The article was received on 03 Feb 2019, accepted on 23 Apr 2019 and first published on 24 Apr 2019


Article type: Paper
DOI: 10.1039/C9TA01359H
J. Mater. Chem. A, 2019,7, 13382-13388

  •   Request permissions

    Redox bucky gels: mixture of carbon nanotubes and room temperature redox ionic liquids

    E. Mourad and O. Fontaine, J. Mater. Chem. A, 2019, 7, 13382
    DOI: 10.1039/C9TA01359H

Search articles by author

Spotlight

Advertisements