High rate capable and high energy supercapacitor performance of reduced graphene oxide/Al(OH)3/polyaniline nanocomposite

Viswanathan, Aranganathan; Acharya, M. Gururaj; Shetty, A. Nityananda

doi:10.1016/j.jcis.2020.05.009

Cited by 12 publications

(3 citation statements)

References 28 publications

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“…These assignments are in agreement with the JCPDS file nos. 531891 29 and 531890, 30 suggesting that the crystalline structure is pseudo-orthorhombic. 31 The peaks confirmed the semicrystalline nature of the PANI (Figure S1b) synthesized via interfacial polymerization and are distinctly different from chemical oxidation method where PANI fibers are predom- inantly of amorphous nature.…”

Section: Resultsmentioning

confidence: 99%

Modulating Electrochemical Performance of Interfacially Polymerized, MoS₂ Decorated Polyaniline Composites for Electrochemical Capacitor Applications

Kuttan

Girija

Devaki

et al. 2022

ACS Appl. Energy Mater.

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Among the transition metal dichalcogenides, molybdenum disulfide (MoS 2 ), a graphene analogue, is the most sought after 2D material for energy storage devices. Electrical conductivity of the thermodynamically stable, semiconducting 2H MoS 2 phase can be further enhanced by the incorporation of conducting polymers. Herein, we synthesize the MoS 2 −PANI nanocomposite with increased crystallinity through an interfacial polymerization route where the growth of HCl doped polyaniline fibers through the MoS 2 sheets developed an intrinsic strong π back-donation between the Mo and the N of the polyaniline fibers. This characteristic π bond has enhanced the conductivity as well as the intrinsic pseudocapacitance by an additional redox electron exchange occurring at the Mo centers. The optimized 1 wt % MoS 2 decorated PANI nanosheets showed a high capacitance of 657.5 F/g at 1.5 A/g, and the corresponding symmetric and asymmetric supercapacitor cells delivered a capacitance of 424 F/g and 335 F/g at 0.5 A/g, respectively. The potential window was increased to 1.5 V in the asymmetric configuration, leading to an enhanced energy density of 104.9 Wh/kg and a power density of 937.9 W/kg. The work highlights the beneficial effects of incorporating MoS 2 in polyaniline for improved capacitance and provides a feasible approach to modulate the electrochemical performance of PANI-based materials for energy storage.

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Section: Resultsmentioning

confidence: 99%

Modulating Electrochemical Performance of Interfacially Polymerized, MoS₂ Decorated Polyaniline Composites for Electrochemical Capacitor Applications

Kuttan

Girija

Devaki

et al. 2022

ACS Appl. Energy Mater.

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“…1b). 79 The equivalent circuit R(Q(R(CR))) given in the inset of Fig. 4a was employed to analyze the electrochemical interface further.…”

Section: Resultsmentioning

confidence: 99%

Effective Methanol Oxidation with Platinum Nanoparticles-Decorated Poly(2-bromomethyl-2-methyl-3,4-propylenedioxythiophene)-Coated Glassy Carbon Electrode

Karazehir

Sarac

Gilsing

et al. 2021

J. Electrochem. Soc.

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Here, we developed a porous network of bromomethyl-substituted 3,4-propylenedioxythiophene polymer using a simple and efficient technique of electrochemical deposition used as conductive support for methanol oxidation. Platinum nanoparticles (PtNPs) are well dispersed and decorated on a high surface area of electrochemically deposited Poly(2-bromomethyl-2-methyl-3,4-propylenedioxythiophene (PProDOT-Br) on a glassy carbon electrode (GCE). A thin film of PProDOT-Br acts as a supporting matrix for deposition of PtNPs and improves the interfacial properties between electrode and electrolyte. The PtNPs-decorated PProDOT-Br (Pt/PProDOT-Br) samples were characterized by X-ray diffraction, Fourier transform infrared attenuated total reflectance spectroscopy, atomic force microscopy, and scanning electron microscopy. Furthermore, the electrocatalytic performance of Pt/PProDOT-Br on GCE for methanol oxidation was assessed by cyclic voltammetry, chronoamperometry, and electrochemical impedance spectroscopy measurements. The findings suggest that the use of Pt/PProDOT-Br/GCE assemblies for efficient methanol oxidation in alkaline media with a small intermediate poisoning is promising for applications as anode material in DMFCs, which should be attributed to the PProDOT-Br support providing a larger surface area with porous nature and enabling the adsorption of more CH3OH for further oxidation. The developed porous network PProDOT-Br with high capacitance may also have large potential in supercapacitor applications.

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“…The biological supercapacitor comprises two active electrodes and a hydrogel electrolyte. Active electrode materials include metal compounds, such as titanium dioxide, 11 manganese vanadium compounds, 12 carbon-based materials, such as carbon nanotubes, 13,14 graphene, 15 transition metal carbides, 16 carbon nanofibers, 17 conductive polymers, such as polyaniline, 18 polypyrrole. 19 The hydrogel electrolyte, located between two active electrodes, serves as an ion transport channel.…”

Section: Introductionmentioning

confidence: 99%

Effects of a plasma jet on electrochemical properties of silk fibroin hydrogel doped with graphene oxide

Zhou

2022

Polymers and Polymer Composites

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This study modified hydrogels prepared from silk fibroinand graphene oxideby injecting plasma into the silk. The SF-GO hydrogels, modified by plasma jet with different discharge time (30, 90, and 150 s) and working gases (argon, air, helium), undergo electrochemical AC impedance spectrum tests. After hydrogel modification with the plasma of any working gas, the impedance in the very low frequency (10−2∼100 Hz) decreased with a longer plasma discharge time. In the very low frequency, the sequence of impedance change is Ar group <air group ≈ He group <empty. The electric capacity of the hydrogel showed an increasing trend with those modified by argon plasma and a decreasing trend for those hydrogels modified by air and helium plasma. The sequence of electric capacity change is Ar group >empty >air group >He group. Fourier transform infrared spectrum, and X-ray diffraction spectrum showed a reduction of β-fold structure and graphene oxide content in SF-GO hydrogels modified by plasma.

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High rate capable and high energy supercapacitor performance of reduced graphene oxide/Al(OH)3/polyaniline nanocomposite

Cited by 12 publications

References 28 publications

Modulating Electrochemical Performance of Interfacially Polymerized, MoS₂ Decorated Polyaniline Composites for Electrochemical Capacitor Applications

Modulating Electrochemical Performance of Interfacially Polymerized, MoS₂ Decorated Polyaniline Composites for Electrochemical Capacitor Applications

Effective Methanol Oxidation with Platinum Nanoparticles-Decorated Poly(2-bromomethyl-2-methyl-3,4-propylenedioxythiophene)-Coated Glassy Carbon Electrode

Effects of a plasma jet on electrochemical properties of silk fibroin hydrogel doped with graphene oxide

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High rate capable and high energy supercapacitor performance of reduced graphene oxide/Al(OH)3/polyaniline nanocomposite

Cited by 12 publications

References 28 publications

Modulating Electrochemical Performance of Interfacially Polymerized, MoS2 Decorated Polyaniline Composites for Electrochemical Capacitor Applications

Modulating Electrochemical Performance of Interfacially Polymerized, MoS2 Decorated Polyaniline Composites for Electrochemical Capacitor Applications

Effective Methanol Oxidation with Platinum Nanoparticles-Decorated Poly(2-bromomethyl-2-methyl-3,4-propylenedioxythiophene)-Coated Glassy Carbon Electrode

Effects of a plasma jet on electrochemical properties of silk fibroin hydrogel doped with graphene oxide

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Modulating Electrochemical Performance of Interfacially Polymerized, MoS₂ Decorated Polyaniline Composites for Electrochemical Capacitor Applications

Modulating Electrochemical Performance of Interfacially Polymerized, MoS₂ Decorated Polyaniline Composites for Electrochemical Capacitor Applications