Composite carbon-based ionic liquid supercapacitor for high-current micro devices

Cowell, Martin; Winslow, R; Zhang, Q; Ju, Jaechul; Wright, Paul K.

doi:10.1088/1742-6596/557/1/012061

Cited by 13 publications

(10 citation statements)

References 4 publications

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“…These results prove that the AC‐CSOS and AC‐BSOS electrodes possess the required electrochemical reversibility and charge/discharge capabilities . These curves show a typical symmetric charge/discharge behavior and are similar to those reported in the literature for EDLCs fabricated from ACs, and other high surface area carbons materials such as graphene . The drop in voltage due to ESR for the AC‐CSOS and AC‐BSOS was 0.145 V and 0.196 V, respectively.…”

Section: Resultssupporting

confidence: 87%

Performance of activated carbons synthesized from fruit dehydration biowastes for supercapacitor applications

Çiftyürek

Bragg

Oginni

et al. 2018

Env Prog and Sustain Energy

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This research documents variability in electrode performance of activated carbons (ACs) produced from two different commercial fruit dehydration wastes through hydrothermal carbonization and chemical activation pathway. Commercial spent osmotic solutions (SOSs) from blueberry dehydration (BSOS) and glycerated cherry dehydration (CSOS) waste materials were subjected to hydrothermal carbonization at 250°C under nitrogen conditions for 30 min to extract hydrochars. BSOS‐ and CSOS‐derived hydrochar powders were further activated using phosphoric acid at 900°C to produce ACs. Results showed that the two commercial fruit dehydration wastes resulted in ACs with different pore characteristics, where the AC‐CSOS showed a higher level diversity in mesoporosity in addition higher surface area once compared to AC‐BSOS. The produced ACs were utilized in a symmetrical electrical double layer supercapacitor (EDLCs) to measure their performance as an electrode. The EDLCs fabricated from AC‐CSOS delivered a higher level of performance, where these materials showed up to 48 F/g specific capacity. Overall, the AC electrodes derived from the SOSs were comparable to many bio‐derived electrodes used for EDLCs, but subsequent enhancement to surface chemistry and surface area is required to outperform some of the best ACs and engineered carbon materials in this application. © 2018 American Institute of Chemical Engineers Environ Prog, 38:e13030, 2019

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Section: Resultssupporting

confidence: 87%

Performance of activated carbons synthesized from fruit dehydration biowastes for supercapacitor applications

Çiftyürek

Bragg

Oginni

et al. 2018

Env Prog and Sustain Energy

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“…The average spacific capacitance obtained is 26.70 Fg -1 . This is a small value compared to the results reported with double layer capacitors where carbon based electrodes and liquid electrolytes are employed 16,17 . It is a well accepted fact that carbon based electrodes are inherantly having better electrode performace than conducting polymers.…”

Section: Resultsmentioning

confidence: 63%

A Cyclic Voltammetry study of a gel polymer electrolyte based redox-capacitor

Bandaranayake¹,

Weerasinghe²,

Vidanapathirana³

et al. 2016

Sri Lankan J Phys

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This work describes the performance of a gel polymer electrolyte (GPE) based redox capacitor using the cyclic voltammetry technique.GPE was prepared with 22.5 wt% polyacrylonitrile (PAN), (1:1weight ratio) ethylene carbonate (EC) and propylene carbonate (PC) having a salt concentration of 1.0 M sodium iodide (NaI). Dependence of ionic conductivity of GPE on temperature was investigated using ac impedance spectroscopy. Two polypyrrole (PPy) electrodes were used as the electrodes of the redox capacitor. The performance of the device was evaluated by cyclic voltammetry. The redox-capacitors were cycled at different scan rates to determine the scan rate at which the maximum capacitance is obtained. After tracking that scan rate, continuous cycling was carried out at that scan rate to investigate the deterioration of capacitance upon cycling. The room temperature conductivity (σ) of the GPE was 4.29 × 10 -3 S cm -1 . The conductivity variation with temperature followed the Arrhenius behavior. From the scan rates selected for the study, the maximum capacity could be obtained at the scan rate of 30 mV s -1 . The average specific capacity of the redox capacitor was 26.70 Fg -1 .

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“…This is due to their unique structure containing ionically conductive electrolyte inserted between two electrically conductive electrodes, which under the applied voltage allows the redistribution of different sizes of cations and anions [ 10 , 58 , 59 , 60 , 61 ]. Another application of application of ionogels can be drug delivery with the purpose to reduce drug degradation and loss hence preventing harmful side effects and increase in drug bioavailability [ 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 ].…”

Section: Ionic Liquid Ionogels Properties and Applicationsmentioning

confidence: 99%

PVDF based ionogels: applications towards electrochemical devices and membrane separation processes

Sahrash

Siddiqa

Razzaq

et al. 2018

Heliyon

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Ionogels have emerged as one of the most interesting and captivating form of composites which credits to the outstanding characteristics. One of the most important constituent of ionogels is ionic liquid, which show many attractive properties notably non-volatility, in-flammability, negligible vapor pressure, tunability, thermal stability and solvating ability. A large variety of matrix materials have been under consideration for ionogels, presently, polymer/ionic liquid based ionogels have attracted much attention. Numerous polymeric materials such as have been utilized for these polymer/ionic liquids based ionogels. Polyvinylidene fluoride (PVDF) has been on top of the line as a matrix material for polymer based ionogels owing to its stability, aging and chemical resistance and mechanical strength. This review is primarily concerned with the properties of polyvinylidene fluoride based ionogels with an emphasis on their applications in various domains electrochemical devices, gas separation and liquid/liquid separations.

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Composite carbon-based ionic liquid supercapacitor for high-current micro devices

Cited by 13 publications

References 4 publications

Performance of activated carbons synthesized from fruit dehydration biowastes for supercapacitor applications

Performance of activated carbons synthesized from fruit dehydration biowastes for supercapacitor applications

A Cyclic Voltammetry study of a gel polymer electrolyte based redox-capacitor

PVDF based ionogels: applications towards electrochemical devices and membrane separation processes

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