Ionic liquids in a poly ethylene oxide cross-linked gel polymer as an electrolyte for electrical double layer capacitor

Chaudoy, Victor; Van, François Tran; Deschamps, Michaël; Ghamouss, Fouad

doi:10.1016/j.jpowsour.2016.12.097

Cited by 86 publications

(47 citation statements)

References 39 publications

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“…The as‐fabricated CSCs, using cross‐linked poly(ethylene oxide)‐copoly(propylene oxide) copolymer as electrolyte, achieved a high voltage of 3 V, as well as remarkable rate capability with 70 % capacitance retention when the current density increased by 10 folds. Ghamouss with his co‐authors successfully assembled all solid state CSCs by utilizing a commercial activated carbon electrode and a cross‐linked methacrylate oligomer and 1‐propyl‐1‐methylpyrrolidinium bis(fluorosulfonyl)imide based gel polymer electrolyte. As demonstrated, the non‐flammable and leakage‐free CSCs could stably work with a voltage of 2.5 V, showing a fine energy density of ≈20 Wh kg −1 at 1 Ag −1 with excellent flexibility.…”

Section: Electrolytes Of Cscsmentioning

confidence: 99%

“…38 10 À3 Scm À1 .T he as-fabricated CSCs, using cross-linked poly(ethylene oxide)-copoly(propylene oxide)c opolymer as electrolyte, achieved ah igh voltage of 3V ,a sw ell as remarkable rate capabilityw ith 70 %c apacitance retention when the current density increased by 10 folds. Ghamouss [16] with his coauthors successfully assembled all solid state CSCs by utilizing ac ommercial activated carbon electrode andacross-linked methacrylate oligomer and 1-propyl-1-methylpyrrolidinium bis(fluorosulfonyl)imide based gel polymere lectrolyte. As demonstrated, the non-flammable andl eakage-free CSCs could stably work with av oltage of 2.5 V, showingafine energy density of % 20 Wh kg À1 at 1Ag À1 with excellent flexibility.I na ddition, ae utectic mixture of N-methyl-N-propylpiperidinium (PI 13 + ), N-butyl-N-methylpyrrolidinium (PY 14 + )c ations and bis (fluorosulfonyl)imide( FSI À )a nions was revealed to show low viscosities, and was successfully demonstrated by fabricating CSCs with ah igh specific capacitance of 180 Fg À1 and wide temperature range of À50-80 8C.…”

Section: Organicelectrolytesmentioning

confidence: 99%

See 1 more Smart Citation

Designing Carbon Based Supercapacitors with High Energy Density: A Summary of Recent Progress

Han

Lai

Wang

et al. 2018

Chemistry A European J

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Carbon based supercapacitors (CSCs), with high output power and long lifespan, are considered as promising power sources for modern electronic devices. The rush to find new approaches for optimizing their electrochemical behaviors is still vibrant, and particularly, widespread enthusiasm was focused on improving the energy density of CSCs through improving the specific capacitance and expanding the operating voltage. In this regard, this article provides a brief review about recent progress and new understanding about the assembly of CSCs with high energy density. Novel applied strategies were highlighted and discussed from the aspects of electrolyte, electrodes, and device modulation. Dynamic and mechanism factors associated with the energy storage process of CSCs are particularly emphasized. Finally, the opportunities and challenges are elaborated in the hope of guiding the promising direction for the design of high-energy CSCs.

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Section: Electrolytes Of Cscsmentioning

confidence: 99%

Section: Organicelectrolytesmentioning

confidence: 99%

Designing Carbon Based Supercapacitors with High Energy Density: A Summary of Recent Progress

Han

Lai

Wang

et al. 2018

Chemistry A European J

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“…[9][10][11][12][13] Many recent reports indicate the gel polymer electrolytes (GPEs), in which liquid electrolytes are immobilized in suitable polymers, as excellent choice to substitute liquid electrolytes to overcome the various limitations, mentioned above. [12][13][14][15][16][17] However, GPEs also suffer from some limitations including lower mobility and limited accessibility of electrolyte ions in pores of electrodes. [13,[15][16][17] Polymer-based hydrogel electrolyte is a recently introduced important class of material, which has ability to provide not only the enhanced specific capacitance and energy but also possesses excellent mechanical properties useful toward the development of flexible supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

Nonaqueous, Redox‐Active Gel Polymer Electrolyte for High‐Performance Supercapacitor

Yadav

Singh

et al. 2019

Energy Tech

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Redox‐active liquid or polymer‐based aqueous electrolytes are widely reported in carbon‐based supercapacitors, enhancing their performance substantially due to the involvement of fast redox reaction(s) at the electrode–electrolyte interface. Here, a nonaqueous, ionic liquid (IL)‐based redox‐active gel polymer electrolyte (GPE) as a potential supercapacitor electrolyte is demonstrated. This electrolyte, comprising IL 1‐butyl‐3‐methylimidazolium bis(trifluoromethylsulfonyl)imide added with redox agent NaI, immobilized in poly(vinylidenefluoride‐co‐hexafluoropropylene), offers excellent thermal, mechanical, and electrochemical stability with high ionic conductivity of ≈3.81 × 10−3 S cm−1 at room temperature. The redox‐additive NaI not only increases the ionic conductivity of electrolyte but also introduces redox behavior at the interfaces of porous activated carbon supercapacitor resulting in high specific capacitance (≈334 F g−1) and high specific energy and power (≈26.1 and ≈18 kw kg−1, respectively). The capacitor with redox‐active nonaqueous GPE offers stable performance up to 10 000 charge–discharge cycles with ≈5% initial fading only. This study opens a novel approach to prepare highly stable redox‐active GPEs for high‐performance supercapacitors.

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“…A few parts per million of water in an organic electrolyte significantly depresses the operating potential window and the storage capacity of EDLC single cells . Additionally, the high flammability of organic electrolytes can result in safety concerns . Compared to organic electrolytes, aqueous electrolytes possess superior environmental adaptability, nonflammability, low internal resistance (IR), and high ionic conductivity (σ), especially neutral electrolytes with noncorrosive properties, which can be applied in diverse current collectors.…”

Section: Introductionmentioning

confidence: 99%

“…[12][13][14] Additionally, the high flammability of organic electrolytes can result in safety concerns. 15,16 Compared to organic electrolytes, aqueous electrolytes possess superior environmental adaptability, nonflammability, low internal resistance (IR), and high ionic conductivity (σ), especially neutral electrolytes with noncorrosive properties, which can be applied in diverse current collectors. Li 2 SO 4 , a neutral aqueous electrolyte, can provide a supercapacitor with a higher operating potential than the theoretical potential window (1.23 V) and, thereby, improve the energy density of the supercapacitor.…”

Section: Introductionmentioning

confidence: 99%

Crosslinked quaternized poly(arylene ether sulfone) copolymer membrane applied in an electric double‐layer capacitor for high energy density

Huo

Xun

et al. 2019

J of Applied Polymer Sci

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The low energy density of supercapacitors, especially supercapacitors based on aqueous electrolytes, is the main factor limiting their application, and the energy density is closely related to the operating potential window of the supercapacitor. The polymer electrolyte is the main contributor to the safe operation and good ion conductivity of the supercapacitor. In this study, a crosslinked quaternized poly(arylene ether sulfone) (PAES) membrane was prepared via crosslinking during membrane formation with a thermal‐only treatment and applied in an electric double‐layer capacitor (EDLC). The pre‐prepared PAES membrane formed a polymer electrolyte with 1 mol/L Li2SO4 and was then fabricated into an EDLC single cell. The properties of both the membrane and ELDC were investigated. The preferred cPAES‐N‐0.2 polymer electrolyte showed an ionic conductivity of 1.18 mS/cm. The optimized EDLC exhibited a single‐electrode gravimetric capacitance of 104.92 F/g at a current density of 1.0 A/g and a high operating potential window (1.5 V); it, thereby, achieved a high energy density of 8.20 W h/kg. The EDLC also exhibited excellent cycling properties over 3000 charge–discharge cycles. The crosslinked structures promoted the tensile strength and thermal stability of the PAES membranes; this was accompanied by a slight decrease in the ionic conductivity. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47759.

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Ionic liquids in a poly ethylene oxide cross-linked gel polymer as an electrolyte for electrical double layer capacitor

Cited by 86 publications

References 39 publications

Designing Carbon Based Supercapacitors with High Energy Density: A Summary of Recent Progress

Designing Carbon Based Supercapacitors with High Energy Density: A Summary of Recent Progress

Nonaqueous, Redox‐Active Gel Polymer Electrolyte for High‐Performance Supercapacitor

Crosslinked quaternized poly(arylene ether sulfone) copolymer membrane applied in an electric double‐layer capacitor for high energy density

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