Capacitance of the polypyrrole/polyimide composite by electrochemical impedance spectroscopy

Iroh, Jude O.; Levine, Kirill L.

doi:10.1016/s0378-7753(03)00356-2

Cited by 37 publications

(23 citation statements)

References 14 publications

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“…Polypyrrole offers a greater degree of flexibility in electrochemical processing than most conducting polymers [69], and consequently the material has been the subject of much research as a supercapacitor or battery electrode [3,12,31,[45][46][47]51,52,55,[70][71][72][73][74][75][76][77][78][79][80][81][82][83][84][85]. On the downside, polypyrrole (Fig.…”

Section: Polypyrrolementioning

confidence: 99%

Conducting-polymer-based supercapacitor devices and electrodes

Snook

Kao

Best

2011

Journal of Power Sources

3,295

1,905

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Section: Polypyrrolementioning

confidence: 99%

Conducting-polymer-based supercapacitor devices and electrodes

Snook

Kao

Best

2011

Journal of Power Sources

3,295

1,905

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“…Doping and de-doping process supplies the possibility of capacitor behavior (pseudocapacitance) for conducting polymers [67]. In this study, a new π conjugated substance was chemically synthesized and characterized by FTIR, 1 H-NMR, and 13 C-NMR spectroscopy.…”

Section: Discussionmentioning

confidence: 99%

A novel synthesis of 3,6-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-9-tosyl- 9H-carbazole

Ateş¹,

Uludag²,

Karazehir³

et al. 2012

Analele Universitatii "Ovidius" Constanta - Seria Chimie

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A novel synthesis of 3,6-bis (2,3-dihydrothieno[3,4-b] (2,3-dihydrothieno [3,4-b][1,4]dioxin-5-yl)-9-tosyl-9H-carbazole (EDOTTsCz) was synthesized and electrochemically polymerized on glassy carbon electrode (GCE) in 0.1 M tetrabutyl ammonium tetrafluoroborate (NB 4 BF 4 )/acetonitrile (CH 3 CN). Alternating copolymer was formed by CV method. Modified polymer electrode was characterized by Fourier transform Infrared Spectroscopy-Attenuated Transmission Reflectance (FTIR-ATR), Cyclic voltammetry (CV), Scanning electron microscopy-Energy dispersive X-ray analysis (SEM-EDX), Atomic force microscope (AFM) and Electrochemical impedance spectroscopy (EIS). Capacitive behaviors of the modified GCE were defined via Nyquist, Bode-magnitude, Bode-phase and Capacitance plots. A modified copolymer electrode provides enhanced capacitance evaluation, which may results in performance in energy storage devices.

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“…Similar Nyquist plots for NiO-based systems have been reported in literature. [60][61][62] Charge discharge and self-discharge behavior of the CGN nanowire-based button-cell unit…”

Section: Role Of Carbon In Cycle Stability and Charge-transfer Resistmentioning

confidence: 99%

Camphoric Carbon‐Grafted Ni/NiO Nanowire Electrodes for High‐Performance Energy‐Storage Systems

Paravannoor¹,

Nair²,

Ranjusha³

et al. 2013

ChemPlusChem

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The present study provides the first report on the preparation and utilization of camphoric carbon nanobeads grafted onto Ni/NiO nanowires for rechargeable electrodes for energy‐storage applications. These functionally graded nanowires were electrophoretically deposited onto nickel foils and processed into high‐surface‐area electrodes. A detailed study has been performed to elucidate the effect of carbon content, different electrolytes, and their concentrations on these nanowires. BET surface area analysis revealed that these grafted nanowires could exhibit a high surface area of about 106 m2 g−1, compared with pristine nanowires, which exhibited a surface area of about 45 m2 g−1. From the analysis of relevant electrochemical parameters, an intrinsic correlation between the capacitance, internal resistance, and the surface morphology has been deduced. Relative contributions of capacitive and diffusion‐controlled processes underlying these thin‐film electrodes have been mathematically modeled. These thin‐film electrodes exhibited specific mass capacitance values as high as (1950±80) and (1140±60) F g−1, as determined from cyclic voltammetry and charge discharge curves, respectively; these values were 30–50 % higher than that of a pristine nanowire electrode. Furthermore, a working model button cell employing these rechargeable electrodes is also described, which exhibited energy and power densities of 83 and 75 Wh kg−1, respectively. This study shows that electrodes based on such nanowire/carbon nanobead configurations can allow significant room for improvement in energy density, power density, and cyclic stability of supercapacitor/battery systems.

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Capacitance of the polypyrrole/polyimide composite by electrochemical impedance spectroscopy

Cited by 37 publications

References 14 publications

Conducting-polymer-based supercapacitor devices and electrodes

Conducting-polymer-based supercapacitor devices and electrodes

A novel synthesis of 3,6-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-9-tosyl- 9H-carbazole

Camphoric Carbon‐Grafted Ni/NiO Nanowire Electrodes for High‐Performance Energy‐Storage Systems

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