Effect of poly(3,4-ethylenedioxythiophene) (PEDOT) in carbon-based composite electrodes for electrochemical supercapacitors

Lei, Chunhong; Wilson, Peter; Lekakou, Constantina

doi:10.1016/j.jpowsour.2011.03.070

Cited by 131 publications

(77 citation statements)

References 29 publications

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“…Ions in solution are not sufficiently fast to cross the polymer|solution interface. PEDOT film acts as a dielectric material separating both charged planes to form a pseudo-capacitor [8,50].…”

Section: Kinetic Model For Pedot Films In Liclo 4 Aqueous Mediamentioning

confidence: 99%

Electrochemically induced free solvent transfer in thin poly(3,4-ethylenedioxythiophene) films

Agrisuelas

Gabrielli

Garcı́a-Jareño

et al. 2015

Electrochimica Acta

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Section: Kinetic Model For Pedot Films In Liclo 4 Aqueous Mediamentioning

confidence: 99%

Electrochemically induced free solvent transfer in thin poly(3,4-ethylenedioxythiophene) films

Agrisuelas

Gabrielli

Garcı́a-Jareño

et al. 2015

Electrochimica Acta

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“…In recent studies [21,22], TEABF 4 is a popular organic electrolyte that can be used in cyclic voltammetry up to 3 V without any degradation; however, the size of TEA + is rather large [20] in comparison with the size of Li + ions and ions of aqueous electrolytes, hence it was decided to use a Li + -based organic electrolyte in this study. Further developments on supercapacitors in latest studies are based on adding pseudocapacitance compounds to the carbon fibrous electrodes [22,23] which increase the overall capacitance but introduce redox processes that would reduce the lifetime of the capacitor device.…”

Section: Introductionmentioning

confidence: 99%

Carbon-Based Fibrous EDLC Capacitors and Supercapacitors

Lekakou

Moudam

Markoulidis

et al. 2011

Journal of Nanotechnology

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This paper investigates electrochemical double-layer capacitors (EDLCs) including two alternative types of carbon-based fibrous electrodes, a carbon fibre woven fabric (CWF) and a multiwall carbon nanotube (CNT) electrode, as well as hybrid CWF-CNT electrodes. Two types of separator membranes were also considered. An organic gel electrolyte PEO-LiCIO 4 -EC-THF was used to maintain a high working voltage. The capacitor cells were tested in cyclic voltammetry, charge-discharge, and impedance tests. The best separator was a glass fibre-fine pore filter. The carbon woven fabric electrode and the corresponding supercapacitor exhibited superior performance per unit area, whereas the multiwall carbon nanotube electrode and corresponding supercapacitor demonstrated excellent specific properties. The hybrid CWF-CNT electrodes did not show a combined improved performance due to the lack of carbon nanotube penetration into the carbon fibre fabric.

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“…The CVs with different scan rates exhibits similarity to rectangular response of electric double-layer capacitor [14]. At higher scan rates, the shape of the CV curves along with enclosed area deviates away from rectangular shape indicating increase in diffusion resistance due to friction between the charge carriers [49][50][51]. As observed in Fig.…”

Section: Supercapacitor Studiesmentioning

confidence: 76%

Preparation and characterization of phosphoric acid-doped hydroxyethyl cellulose electrolyte for use in supercapacitor

Sudhakar

Selvakumar

Bhat

2015

Mater Renew Sustain Energy

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A new borax cross-linked biodegradable solid polymer electrolyte based on hydroxyethyl cellulose and phosphoric acid (H 3 PO 4 ) was prepared. Characterizations of doped and undoped SPE were done using Fourier transform infrared spectroscopic and electrochemical studies. The ionic conductivity of the films increased with increase in acid concentration and the ionic conductivity obtained at 303 K was 4.1 9 10 -3 S cm -1 . Furthermore, effects of acid concentration on ionic conductivity and activation energy were discussed. Dielectric studies showed long tail-like feature indicating capacitive nature. A supercapacitor was fabricated and its electrochemical characteristics were studied. The supercapacitor showed a fairly good specific capacitance of 83 F g -1 at 2 mV s -1 and galvanostatic charge-discharge studies showed the mirror-like pattern with 98 % columbic efficiency. Cyclic stability was measured up to 2000 cycles.

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Effect of poly(3,4-ethylenedioxythiophene) (PEDOT) in carbon-based composite electrodes for electrochemical supercapacitors

Cited by 131 publications

References 29 publications

Electrochemically induced free solvent transfer in thin poly(3,4-ethylenedioxythiophene) films

Electrochemically induced free solvent transfer in thin poly(3,4-ethylenedioxythiophene) films

Carbon-Based Fibrous EDLC Capacitors and Supercapacitors

Preparation and characterization of phosphoric acid-doped hydroxyethyl cellulose electrolyte for use in supercapacitor

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