Electrochemical performance of activated carbon and graphene based supercapacitor

Azam, Mohd Asyadi; Dorah, Norasimah; Seman, Raja Noor Amalina Raja; Manaf, Nor Syafira Abdul; Kudin, Tunku Ishak Tunku

doi:10.1179/1753555714y.0000000229

Cited by 15 publications

(5 citation statements)

References 13 publications

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“…where I is the applied current, m is the average mass of the active material in each electrode and dV/dt is the slope of the discharge curve after the voltage (IR) drop [42].…”

Section: Resultsmentioning

confidence: 99%

Highly efficient growth of vertically aligned carbon nanotubes on Fe–Ni based metal alloy foils for supercapacitors

Seman

Azam

Mohamed

2016

Adv. Nat. Sci: Nanosci. Nanotechnol.

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Supercapacitors are highly promising energy devices with superior charge storage performance and a long lifecycle. Construction of the supercapacitor cell, especially electrode fabrication, is critical to ensure good performance in applications. This work demonstrates direct growth of vertically aligned carbon nanotubes (CNTs) on Fe–Ni based metal alloy foils, namely SUS 310S, Inconel 600 and YEF 50, and their use in symmetric vertically aligned CNT supercapacitor electrodes. Alumina and cobalt thin film catalysts were deposited onto the foils, and then CNT growth was performed using alcohol catalytic chemical vapour deposition. By this method, vertically aligned CNTs were successfully grown and used directly as a binder-free supercapacitor electrode to deliver excellent electrochemical performance. The device showed relatively good specific capacitance, a superior rate capability and excellent cycle stability, maintaining about 96% capacitance up to 1000 cycles.

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“…where I is the applied current, m is the average mass of the active material in each electrode and dV/dt is the slope of the discharge curve after the voltage (IR) drop [42].…”

Section: Resultsmentioning

confidence: 99%

Highly efficient growth of vertically aligned carbon nanotubes on Fe–Ni based metal alloy foils for supercapacitors

Seman

Azam

Mohamed

2016

Adv. Nat. Sci: Nanosci. Nanotechnol.

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“…1 Supercapacitors as one of the power storage devices have been gaining wide attention with their excellent energy and power density, lifetime, environmental friendliness, and safety. [2][3][4][5] Based on the charge storage mechanism, supercapacitors are classied as electrochemical double-layer capacitors (EDLCs), Faraday pseudocapacitors and hybrid supercapacitors. 6,7 Carbonaceous materials such as graphene have been widely investigated in the fabrication of supercapacitors because of its unique properties like high specic surface area (z2630 m 2 g À1 ), conductivity, mechanical exibility, and chemical stability.…”

Section: Introductionmentioning

confidence: 99%

Chitosan-based oxygen-doped activated carbon/graphene composite for flexible supercapacitors

et al. 2022

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“…Due to lower internal resistance, aqueous supercapacitors are more suitable in mobile and space applications. The main components of supercapacitor are electrolyte, electrodes, and separators 6‐11 . The electrodes of supercapacitor are made up of highly porous material.…”

Section: Introductionmentioning

confidence: 99%

“…The main components of supercapacitor are electrolyte, electrodes, and separators. [6][7][8][9][10][11] The electrodes of supercapacitor are made up of highly porous material. The charge transfer is taking place through electrolyte while internal short circuit between the two conductive electrodes is avoided by various separators.…”

Section: Introductionmentioning

confidence: 99%

Process‐based modeling of nylon separator supercapacitor

Godse

Karkaria²,

Bhalerao

et al. 2020

Energy Storage

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Type of separators along with the properties of electrode material, electrolytes decide the performance and hence the utility of supercapacitor. Nylon as a separator material is investigated in this paper. Comparison of parameters of nylon separator supercapacitor and polyethylene separator supercapacitor is presented. The processing of electrode materials plays a significant role on the performance parameters of supercapacitor. Material processing method such as ball milling is the most commonly used in energy storage devices such as supercapacitors, batteries, and fuel cells. The effect of variation of the most significant ball milling parameters such as forward‐reverse time, total ball milling time and speed of ball mill machine on the performance of supercapacitor has been studied. Modeling of ball milling process on electrode material is done by using the statistical method design of the experiment. Pulse current density is taken as new output parameters which is more important than capacitance and internal resistance. Forward‐reverse time, total ball milling time, and speed of ball mill machine are taken as input parameters for statistical modeling. Capacitance and pulse current density is taken as output parameters for the modeling of nylon separator supercapacitor. The model values of output parameters of supercapacitor are validated with experimental values.

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Electrochemical performance of activated carbon and graphene based supercapacitor

Cited by 15 publications

References 13 publications

Highly efficient growth of vertically aligned carbon nanotubes on Fe–Ni based metal alloy foils for supercapacitors

Highly efficient growth of vertically aligned carbon nanotubes on Fe–Ni based metal alloy foils for supercapacitors

Chitosan-based oxygen-doped activated carbon/graphene composite for flexible supercapacitors

Process‐based modeling of nylon separator supercapacitor

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