期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 89, 期 -, 页码 52-56出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2018.02.018
关键词
Conductive polymers; EDOT oxidation; Electro-polymerisation; PEDOT; Poly(3,4-ethylenedioxythiophene); Reticulated vitreous carbon
资金
- Centre for Doctoral Training in Sustainable Infrastructure Systems from the University of Southampton [EP/L01582X/1]
- International Consortium of Nanotechnology of the Lloyd's Register Foundation [G0086]
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.
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