Coral-like PEDOT Nanotube Arrays on Carbon Fibers as High-Rate Flexible Supercapacitor Electrodes
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Integration of conductive polymers with flexible substrate to construct an electronically conductive and mechanically flexible electrode is of great significance for a flexible energy storage device. This work reports a facile method to prepare coral-like poly(3,4-ethylenedioxythiophene) (PEDOT) nanotube arrays on textile carbon fibers (TCs) for high-rate supercapacitor application. The ZnO nanowires grown on TCs serve as a sacrificial template. Electrochemical polymerization of 3,4-ethylenedioxythiophene followed by template removal of ZnO nanowires yields a hybrid composed of PEDOT nanotubes vertically grown on TC (TC@PEDOT). The strong interfacial interactions between nanotubes and substrate afford the hybrid with superior mechanical flexibility and high conductivity (790 S m–1). More importantly, the tubular structure enables ∼88% PEDOT to be involved in the reversible redox reaction, delivering a specific capacitance 184 F g–1 in 1.0 M H2SO4 electrolyte with 88% capacitance retention after 10 000 cycles. A solid-state TC@PEDOT-based supercapacitor with PVA-H2SO4 as gel electrode exhibits a high-rate capability with a relaxation time constant (τ0 = 0.96 s) very close to that in aqueous H2SO4 electrolyte (τ0 = 0.87 s). Moreover, it can withstand various bending and twisting tests without notable performance loss, giving the TC@PEDOT hybrid great promise as a high-rate electrode for flexible energy storage devices.Keywords:
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Abstract The conducting polymer poly(3,4-ethylenedioxythiophene) (known as PEDOT) is routinely fabricated into doped thin films for investigation of its inherent properties as well as for a range of applications. Fabrication of PEDOT is often achieved via oxidative polymerisation, where the conducting polymer is polymerised and doped (oxidised) to yield a conductive polymer thin film. The oxidiser and the polymerisation temperature are two parameters that may influence the properties and performance of the resultant PEDOT thin film. In this study, the role of temperature for the chemical polymerisation of PEDOT using the oxidiser iron tosylate is investigated from a computational and experimental viewpoint. While computations of the doping energetics suggest increasing doping with increasing temperature, x-ray photoelectron spectroscopy of fabricated PEDOT thin films indicate doping is much more complicated. With the aid of computations of the spatial distribution functions for tosylate in PEDOT, experiments indicate that two different populations of tosylate anions exist in the PEDOT matrix. Their relative populations change as a function of the polymerisation temperature. Therefore, polymerisation temperature plays a critical role in tailoring the properties of PEDOT in pursuit of being fit-for-purpose for the desired application.
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Poly(3,4-Ethylenedioxythiophene)(PEDOT)is one of the most stable conduct in conducting polymers. In this paper, preparation methods of 3,4-Ethylenedioxythiophene(EDOT)and its polymer(PEDOT)are reviewed. Applications of PEDOT in antistatic, electrolytic capacitor, organic optoelectronic materials and sensor are investigated as well.
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In this paper the progress in study on a new organic conducting polymer–poly(3,4-ethylenedioxythiophene) (PEDOT) is reviewed. Its ground-state structure, excellent advantages and morphology are presented. Then the modification ways such as its copolymers and composites are introduced in detail. Moreover, the applications of PEDOT are also summarized.
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Popularity of conducting polymers are become widely known and researches for practical application also has been done. In order to developed a continuous process for industrial scale, we have proposed a spray pyrolysis method to synthesis a flexible conductive film of Poly(3,4-ethylenedioxythiophene) poly(styrene sulfonate) (PEDOT:PSS) on poly(ethylene terephthalate) (PET) and annealed at different temperatures and spray distances. The optimum condition that resulting a best morphology was anneal at 90oC and 20 cm distance with electrical conductivity 4.5 S/cm. It was found that annealing at temperature higher than 90oC will resulting a stress to a film and formed crack due to a different thermal expansion, while at the distance higher than 20 cm resulting a loss of PEDOT:PSS droplets. IR spectra shows that there is no any sign of PEDOT:PSS degradation even at 110oC. SEM analysis also show that the thickness is well distributed and there is no any sign of crack formedArticle History: Received February 24th 2017; Received in revised form May 16th 2018; Accepted May 20th 2018; Available onlineHow to Cite This Article: Tarmidzi, F.M. and Sasongko, S.B. (2018) Synthesis A Flexible Conductive Film of Poly 3,4-Ethylenedioxythiophene Polystyrene Sulfonate (PEDOT:PSS) Using Spray Pyrolysis Method. Int. Journal of Renewable Energy Development, 7(2), 159-162.https://doi.org/10.14710/ijred.7.2.159-162
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Alternating current (ac) bipolar electropolymerization of 3,4-ethylenedioxythiophene (EDOT) was performed in the presence of hexachloroplatinate ([PtCl6]2–) or poly(styrenesulfonate) (PSS). We demonstrated that both [PtCl6]2– and PSS were successfully incorporated into electrogenerated poly(3,4-ethylenedioxythiophene) (PEDOT) as dopants to offer hybrid fibers composed of (i) PEDOT and platinum nanoparticles (PtNPs) (PEDOT–Pt hybrid fibers) and (ii) PEDOT and PSS (PEDOT–PSS hybrid fibers), respectively, in one step, grown from the very edges of Au wires used as bipolar electrodes (BPEs).
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Conductive poly(3,4-ethylenedioxythiophene) coated terylene textile represented by PEDOT/CTT was prepared via in-situ polymerization.It is found that the PEDOT nano-particles with diameter of ~100 nm spread over the surface of terylene fibers resulting in a good conductivity of 2.67×10-2 S/cm,as measured by a four-probe method.Moreover,the PEDOT/CTT exhibits an electrochromic behavior,which takes a variation of color from pale blue to dark blue when the applied potential changed from-0.42_0 V to 0_1.0 V vs.SCE.
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The improvement of the quality and electrical properties of a film will contribute to the stability and performance of an electronic product during component manufacturing.However, the pristine solution concentration ratio of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) to water is in the range of only 1.0-1.3wt%.Therefore, the pristine conductivity of PEDOT:PSS is poor because the conductive PEDOT is dispersed in excess water, resulting in the limitation of carrier transmission.In this study, a simple method of removing excess water in PEDOT:PSS solution by heating and stirring is proposed.The heating and stirring of the PEDOT:PSS solution can not only change the structure but also increase the conductivity of the PEDOT:PSS film.It is an effective method of improving the quality and electrical properties of the film simultaneously.Moreover, the fabrication process for the PEDOT:PSS film in this study is different from that of the commonly used multilayer film.A single film of high quality can be obtained in a short process time by heating and stirring.A high-quality single film is better than a multilayer film.
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DOI: 10.1002/marc.200800550 The author would like to announce the following corrections: The first name of the third author is Avanish Kumar Srivastava, not Avaneesh Kumar Srivastava.
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Conductive thin films of Poly(3,4-ethylenedioxythiophene) (PEDOT) have been successfully deposited on a variety of substrates by a simple chemical vapor deposition (CVD) method starting from the liquid monomer (EDOT) and using FeCl3 as a catalyst. Resistivity measurements indicated very good conductivity of the material, comparable with other previously reported values for PEDOT deposited by CVD. Further cyclic voltammetry measurements indicated a value of around -4.7 eV for the HOMO level of PEDOT in the deposited films, in agreement with other reported values. This value is within the bandgap of most semiconductors, and together with the relative low internal resistance makes our material an ideal candidate as a solid-state hole transport material for dye sensitized solar cells.
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