A Novel High-Performance Supercapacitor based on Chitosan/Graphene Oxide-MWCNT/Polyaniline

Hosseini, Mir Ghasem; Shahryari, Elham

doi:10.1016/j.jcis.2017.02.027

Cited by 99 publications

(20 citation statements)

References 48 publications

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“…The N 2p spectrum in Figure d can be fitted to four peaks with the binding energies of 398.7, 399.4, 400.8, and 402.2 eV, respectively. These four peaks correspond to the quinone imine, aniline, positively charged imine, and proton amine, respectively. , Based on the above results, it can be summarized that aniline molecules have been successfully electrochemically polymerized at the outer surface and between the PEDOT nanotube arrays.…”

Section: Resultsmentioning

confidence: 70%

Connecting PEDOT Nanotube Arrays by Polyaniline Coating toward a Flexible and High-Rate Supercapacitor

Niu

Han

Sun

et al. 2021

ACS Sustainable Chem. Eng.

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As a conductive polymer with great potential, poly(3,4-ethylenedioxythiophene) (PEDOT) has been developed as a high-rate supercapacitor electrode but stores less energy due to its limited theoretical capacity. In this work, the growth of PEDOT nanotube arrays on flexible Ti foil (Ti@PEDOT) is reported with significantly enhanced performance by incorporating highly pseudocapacitive polyaniline (PANi). The as-prepared Ti@PEDOT nanotube arrays offer a three-dimensionally conductive network. Such arrays have been successfully connected with each other through the uniform coating of PANi onto the surface, thus contributing a substantial pseudocapacitance. By constructing the above novel structure, the Ti@PEDOT-PANi hybrid electrode delivers a nearly 10 times enhancement of areal capacitance (2876 mF cm −2 at 5 mA cm −2 ) together with a remarkable rate performance (85% capacitance retention at 100 mA cm −2 ). Moreover, a flexible supercapacitor assembled with the Ti@PEDOT-PANi electrode also exhibits a high-rate property with a relaxation time constant as small as 0.83 s (τ 0 = 0.83 s) and a volumetric energy density of 15.9 mW h cm −3 under the power density of 178.9 mW cm −3 . The cycling stability of such a device is also remarkable, indicating the great advantages of the Ti@PEDOT-PANi electrode. More gratifying, such device can endure continuous bending at a maximum angle of 145°for 200 cycles. The present work can provide theoretical and technical support for the design and development of polymer-based flexible electrodes which possess both large areal capacitance and fast charging−discharging rates.

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Section: Resultsmentioning

confidence: 70%

Connecting PEDOT Nanotube Arrays by Polyaniline Coating toward a Flexible and High-Rate Supercapacitor

Niu

Han

Sun

et al. 2021

ACS Sustainable Chem. Eng.

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“…The abundant quinoid imine (-N=) enhances the electron delocalization, ensuring high conductivity of PANI chains. [46][47][48] Besides, the peak appearing at 208 eV in the full spectrum is ascribed to an enriched doping of ClO 4 − in PANI, which results in numerous unsaturated bonds and provides substantial reactive sites for the redox reaction [49]. Accordingly, RGO/PEDOT/PANI exhibits a higher capacitance (535 F g −1 ) compared with RGO/PEDOT (228 F g −1 ).…”

Section: Go/pedot:pss Rgo/pedot Rgo/pedot/pani Go/pedot:pss Rgo/pedotmentioning

confidence: 99%

Hierarchical Porous RGO/PEDOT/PANI Hybrid for Planar/Linear Supercapacitor with Outstanding Flexibility and Stability

et al. 2020

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HIGHLIGHTS • Hierarchical porous reduced graphene oxide/poly(3,4-ethylenedioxythiophene)/polyaniline hybrid was designed. • The hybrid achieves a high capacitance of 535 F g −1 along with a good rate capability and cyclability. ABSTRACT Many hybrid electrodes for supercapacitors (SCs) are a reckless combination without proper structural design that keeps them from fulfilling their potential. Herein, we design a reduced graphene oxide/poly(3,4-ethylenedioxythiophene)/polyaniline (RGO/PEDOT/PANI) hybrid with hierarchical and porous structure for high-performance SCs, where components fully harness their advantages, forming an interconnected and conductive framework with substantial reactive sites.Thus, this hybrid achieves a high capacitance of 535 F g −1 along with good rate capability and cyclability. The planar SC based on this hybrid deliver an energy density of 26.89 Wh kg −1 at a power density of 800 W kg −1. The linear SC developed via modifying a cotton yarn with the hybrid exhibits good flexibility and structural stability, which operates normally after arbitrary deformations. This work provides a beneficial reference for developing SCs.

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“…This generally occurs in carbon-based electrode materials such as carbon black, carbon nanofibers, carbon nanotubes, and graphenes [ 6 , 7 , 8 , 9 ]. By contrast, PC is manifested by the Faraday oxidation/reduction reaction of active materials on the electrode surface [ 10 , 11 , 12 ]. Because graphene has high conductivity, carrier mobility, and specific surface area, it has been widely used in energy devices such as fuel cells [ 13 ], solar cells [ 14 ], oxygen evolution reaction electrodes [ 15 ], and SCs [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Dielectric Barrier Discharge Plasma Jet (DBDjet) Processed Reduced Graphene Oxide/Polypyrrole/Chitosan Nanocomposite Supercapacitors

et al. 2021

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Reduced graphene oxide (rGO) and/or polypyrrole (PPy) are mixed with chitosan (CS) binder materials for screen-printing supercapacitors (SCs) on arc atmospheric-pressure plasma jet (APPJ)-treated carbon cloth. The performance of gel-electrolyte rGO/CS, PPy/CS, and rGO/PPy/CS SCs processed by a dielectric barrier discharge plasma jet (DBDjet) was assessed and compared. DBDjet processing improved the hydrophilicity of these three nanocomposite electrode materials. Electrochemical measurements including electrical impedance spectroscopy (EIS), cyclic voltammetry (CV), and galvanostatic charging-discharging (GCD) were used to evaluate the performance of the three types of SCs. The Trasatti method was used to evaluate the electric-double layer capacitance (EDLC) and pseudocapacitance (PC) of the capacitance. The energy and power density of the three types of SCs were illustrated and compared using Ragone plots. Our experiments verify that, with the same weight of active materials, the combined use of rGO and PPy in SCs can significantly increase the capacitance and improve the operation stability.

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A Novel High-Performance Supercapacitor based on Chitosan/Graphene Oxide-MWCNT/Polyaniline

Cited by 99 publications

References 48 publications

Connecting PEDOT Nanotube Arrays by Polyaniline Coating toward a Flexible and High-Rate Supercapacitor

Connecting PEDOT Nanotube Arrays by Polyaniline Coating toward a Flexible and High-Rate Supercapacitor

Hierarchical Porous RGO/PEDOT/PANI Hybrid for Planar/Linear Supercapacitor with Outstanding Flexibility and Stability

Dielectric Barrier Discharge Plasma Jet (DBDjet) Processed Reduced Graphene Oxide/Polypyrrole/Chitosan Nanocomposite Supercapacitors

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