Ionic liquid enhanced magnesium-based polymer electrolytes for electrical double-layer capacitors

Francis, K.; Liew, Chiam–Wen; Ramesh, S.

doi:10.1007/s11581-015-1619-4

Cited by 97 publications

(20 citation statements)

References 22 publications

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“…Figure 5 represents a potential window of the PVCH3 blend polymer electrolyte film at ambient temperature. An applied voltage has been measured in the range of 0 to 2.5 V using two stainless-steel working electrodes [ 62 ]. It was found that there is no residual electronic current up to 1.75 V, and the breakdown voltage of the PVA: CS: 40%NH 4 SCN: 42%glycerol system was found to be ~2 V. Beyond 2 V the drastic rise in the current density is observable, which signifies the breakdown of the film at the inert electrode surface.…”

Section: Resultsmentioning

confidence: 99%

The Study of Plasticized Amorphous Biopolymer Blend Electrolytes Based on Polyvinyl Alcohol (PVA): Chitosan with High Ion Conductivity for Energy Storage Electrical Double-Layer Capacitors (EDLC) Device Application

et al. 2020

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In this study, plasticized films of polyvinyl alcohol (PVA): chitosan (CS) based electrolyte impregnated with ammonium thiocyanate (NH4SCN) were successfully prepared using a solution-casting technique. The structural features of the electrolyte films were investigated through the X-ray diffraction (XRD) pattern. The enrichment of the amorphous phase with increasing glycerol concentration was confirmed by observing broad humps. The electrical impedance spectroscopy (EIS) portrays the improvement of ionic conductivity from 10−5 S/cm to 10−3 S/cm upon the addition of plasticizer. The electrolytes incorporated with 28 wt.% and 42 wt.% of glycerol were observed to be mainly ionic conductor as the ionic transference number measurement (TNM) was found to be 0.97 and 0.989, respectively. The linear sweep voltammetry (LSV) investigation indicates that the maximum conducting sample is stable up to 2 V. An electrolyte with the highest conductivity was used to make an energy storage electrical double-layer capacitor (EDLC) device. The cyclic voltammetry (CV) plot depicts no distinguishable peaks in the polarization curve, which means no redox reaction has occurred at the electrode/electrolyte interface. The fabricated EDLC displays the initial specific capacitance, equivalent series resistance, energy density, and power density of 35.5 F/g, 65 Ω, 4.9 Wh/kg, and 399 W/kg, respectively.

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Section: Resultsmentioning

confidence: 99%

The Study of Plasticized Amorphous Biopolymer Blend Electrolytes Based on Polyvinyl Alcohol (PVA): Chitosan with High Ion Conductivity for Energy Storage Electrical Double-Layer Capacitors (EDLC) Device Application

et al. 2020

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“…This phenomenon is common in case of EDLC. Actually when continuous charging and discharging processes occur, ion aggregates are formed, blocking free ion movement and thus resulting in a decrease in capacitance of EDLC . After the 2000th cycle, the specific capacitance for EDLC I, EDLC II, and EDLC III becomes 53.25, 76.4, and 44.51%, respectively, of the initial specific capacitance.…”

Section: Resultsmentioning

confidence: 99%

Symmetric electric double‐layer capacitor containing imidazolium ionic liquid‐based solid polymer electrolyte: Effect of TiO₂ and ZnO nanoparticles on electrochemical behavior

Das

Ghosh

2019

J of Applied Polymer Sci

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Poly(vinylidene fluoride‐co‐hexafluoropropene) (PVDF–HFP)‐based polymer electrolytes embedded with 1‐ethyl‐3‐methylimidazolium tetrafluoroborate ioniliquid have been synthesized to improve the ionic conductivity. Electric double‐layer capacitors (EDLC) have been prepared using the synthesized polymer electrolytes. Inorganic oxide fillers (5 wt %) such as titanium dioxide (TiO2) and zinc oxide (ZnO) nanoparticles have been added to polymer electrolytes to compare the electrochemical behavior of the fabricated EDLC. The intrinsic dielectric constant of nanoparticles contributes in ionic dissociation which enhances ionic conductivity of electrolytes and also controls the specific capacitance of the EDLC fabricated with these electrolytes. Physicochemical properties of polymer nanocomposites have been investigated using X‐ray diffraction, differential scanning calorimetry, and Fourier transform infrared analysis, which confirms decrease of crystalline phase in host polymer PVDF–HFP. The maximum voltage stability is obtained for TiO2‐based polymer electrolyte. The high specific capacitance as well as high energy density is obtained for the EDLC cell with TiO2‐based polymer electrolyte compared to EDLC with ZnO nanoparticles‐based electrolyte. EDLC cells show specific capacitance of 76.4 and 44.51% of initial specific capacitance value at 2000th cycle for ZnO and TiO2‐based polymer electrolytes, respectively. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48757.

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“…Francis et al have reported fabrication and characterization of a gel electrolyte of poly(vinyl alcohol) + magnesium triflate (Mg(CF 3 SO 3 ) 2 ) + [BMIm][Br]. The electrochemical potential window of such an ionic electrolyte was reported to extend from 1.35 to 2.6 V, with a significant C sp enhancement up to 46 F g −1 compared to the IL‐free electrolyte.…”

Section: Ils For Edlcs and Hybrid Scsmentioning

confidence: 99%

Ionic Liquids as Environmentally Benign Electrolytes for High‐Performance Supercapacitors

et al. 2018

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Electrochemical capacitors (ECs) are a vital class of electrical energy storage (EES) devices that display the capacity of rapid charging and provide high power density. In the current era, interest in using ionic liquids (ILs) in high‐performance EES devices has grown exponentially, as this novel versatile electrolyte media is associated with high thermal stability, excellent ionic conductivity, and the capability to withstand high voltages without undergoing decomposition. ILs are therefore potentially useful materials for improving the energy/power performances of ECs without compromising on safety, cyclic stability, and power density. The current review article underscores the importance of ILs as sustainable and high‐performance electrolytes for electrochemical capacitors.

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Ionic liquid enhanced magnesium-based polymer electrolytes for electrical double-layer capacitors

Cited by 97 publications

References 22 publications

The Study of Plasticized Amorphous Biopolymer Blend Electrolytes Based on Polyvinyl Alcohol (PVA): Chitosan with High Ion Conductivity for Energy Storage Electrical Double-Layer Capacitors (EDLC) Device Application

The Study of Plasticized Amorphous Biopolymer Blend Electrolytes Based on Polyvinyl Alcohol (PVA): Chitosan with High Ion Conductivity for Energy Storage Electrical Double-Layer Capacitors (EDLC) Device Application

Symmetric electric double‐layer capacitor containing imidazolium ionic liquid‐based solid polymer electrolyte: Effect of TiO₂ and ZnO nanoparticles on electrochemical behavior

Ionic Liquids as Environmentally Benign Electrolytes for High‐Performance Supercapacitors

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Ionic liquid enhanced magnesium-based polymer electrolytes for electrical double-layer capacitors

Cited by 97 publications

References 22 publications

The Study of Plasticized Amorphous Biopolymer Blend Electrolytes Based on Polyvinyl Alcohol (PVA): Chitosan with High Ion Conductivity for Energy Storage Electrical Double-Layer Capacitors (EDLC) Device Application

The Study of Plasticized Amorphous Biopolymer Blend Electrolytes Based on Polyvinyl Alcohol (PVA): Chitosan with High Ion Conductivity for Energy Storage Electrical Double-Layer Capacitors (EDLC) Device Application

Symmetric electric double‐layer capacitor containing imidazolium ionic liquid‐based solid polymer electrolyte: Effect of TiO2 and ZnO nanoparticles on electrochemical behavior

Ionic Liquids as Environmentally Benign Electrolytes for High‐Performance Supercapacitors

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Symmetric electric double‐layer capacitor containing imidazolium ionic liquid‐based solid polymer electrolyte: Effect of TiO₂ and ZnO nanoparticles on electrochemical behavior