Abstract
This work shows the electro-polymerisation of thin film poly(3,4-ethylenedioxythiophene) on three-dimensional reticulated vitreous carbon substrates by cyclic voltammetry and pulsed polymerisation methods from a Lewis neutral chloroaluminate ionic liquid containing 3,4-ethylenedioxythiophene monomer. The polymer composite is attractive as an energy storage electrode for sustainable and high-performance technologies due to its unique properties of battery and capacitor in one system, i.e., the redox reaction occurring simultaneously with the anion doping/de-doping of the conductive polymer with AlCl4− ionic species contained in the ionic liquid. The structure of the polymer films, their doping/de-doping mechanism and the stability in the ionic liquid were characterised by scanning electron microscopy and cyclic voltammetry and compared with films electro-polymerised on planar vitreous carbon. The typical granular and nano/micro-porous polymer structure observed on planar vitreous carbon was successfully replicated on the macro-porous reticulated vitreous carbon surface. The polymer films show approximately 45% higher capacity than films on planar substrates and similar efficient redox behaviour, proving that the material has hybrid battery-capacitor properties enhanced by the higher area per unit volume of reticulated vitreous carbon.
Original language | English (US) |
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Pages (from-to) | 52-56 |
Number of pages | 5 |
Journal | Electrochemistry Communications |
Volume | 89 |
DOIs | |
State | Published - Apr 2018 |
Externally published | Yes |
Keywords
- Conductive polymers
- EDOT oxidation
- Electro-polymerisation
- PEDOT
- Poly(3,4-ethylenedioxythiophene)
- Reticulated vitreous carbon
ASJC Scopus subject areas
- Electrochemistry