Ionic liquids containing tricyanomethanide anions: physicochemical characterisation and performance as electrochemical double-layer capacitor electrolytes

There are several advantages to developing electrochemical double-layer capacitors (EDLC) or supercapacitors with high specific energy densities, for example, these can be used in applications related to quality power generation, voltage stabilization, and frequency regulation. In this regard, ionic liquids capable of providing a higher voltage window of operations compared to an aqueous and/or polymer electrolyte can significantly enhance the specific energy densities of EDLCs. Here we demonstrate that EDLCs fabricated using ionic liquid 1-butyl-1-methylpyrrolidinium tris (pentafluoroethyl) trifluorophosphate (BMP-FAP) as an electrolyte and few layer liquid-phase exfoliated graphene as electrodes show remarkable performance compared to EDLC devices fabricated with aqueous potassium hydroxide (6M) as well as widely used ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate (BMIM-PF6). We found that graphene EDLC’s with BMP-FAP as an electrolyte possess a high specific energy density of ≈25 Wh/kg along with specific capacitance values as high as 200 F/g and having an operating voltage windows of >5 volts with a rapid charge transfer response. These findings strongly indicate the suitability of BMP-FAP as a good choice of electrolyte for high energy density EDLC devices.

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Comparative Study on Performances of Trimethyl-Sulfonium and Trimethyl-Ammonium Based Ionic Liquids in Molecular Solvents as Electrolyte for Electrochemical Double Layer Capacitors

The Journal of Physical Chemistry C ◽

10.1021/jp402485z ◽

2013 ◽

Vol 117 (20) ◽

pp. 10315-10325 ◽

Cited By ~ 33

Author(s):

Erwan Coadou ◽

Laure Timperman ◽

Johan Jacquemin ◽

Hervé Galiano ◽

Chistopher Hardacre ◽

...

Keyword(s):

Ionic Liquids ◽

Comparative Study ◽

Double Layer ◽

Electrochemical Double Layer Capacitors ◽

Electrochemical Double Layer ◽

Double Layer Capacitors ◽

Molecular Solvents

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The impact of carbonate solvents on the self-discharge, thermal stability and performance retention of high voltage electrochemical double layer capacitors

Physical Chemistry Chemical Physics ◽

10.1039/c9cp00483a ◽

2019 ◽

Vol 21 (18) ◽

pp. 9089-9097 ◽

Cited By ~ 1

Author(s):

Lars H. Hess ◽

Ladyna Wittscher ◽

Andrea Balducci

Keyword(s):

Thermal Stability ◽

Double Layer ◽

High Voltage ◽

Electrochemical Stability ◽

The Self ◽

Electrochemical Double Layer Capacitors ◽

Electrochemical Double Layer ◽

And Performance ◽

The Impact ◽

Double Layer Capacitors

Advanced electrolytes for supercapacitors with high electrochemical stability are necessary to improve the suitability of supercapacitors for many applications.

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Molybdenum Carbide Derived Carbon Based Electrode Materials for High Energy and Power Density Electrochemical Double-Layer Capacitors

ECS Meeting Abstracts ◽

10.1149/ma2009-02/40/3012 ◽

2009 ◽

Keyword(s):

Power Density ◽

Double Layer ◽

Molybdenum Carbide ◽

Electrode Materials ◽

High Energy ◽

Electrochemical Double Layer Capacitors ◽

Electrochemical Double Layer ◽

Double Layer Capacitors ◽

Carbide Derived Carbon ◽

Energy And Power Density

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A high-energy-density quasi-solid-state carbon nanotube electrochemical double-layer capacitor with ionogel electrolyte

Translational Materials Research ◽

10.1088/2053-1613/2/1/015001 ◽

2015 ◽

Vol 2 (1) ◽

pp. 015001 ◽

Cited By ~ 7

Author(s):

Daniel Membreno ◽

Leland Smith ◽

Kyeong-Sik Shin ◽

Chi On Chui ◽

Bruce Dunn

Keyword(s):

Carbon Nanotube ◽

Solid State ◽

Energy Density ◽

Double Layer ◽

High Energy ◽

High Energy Density ◽

Double Layer Capacitor ◽

Electrochemical Double Layer Capacitor ◽

Electrochemical Double Layer

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Utilizing ionic liquids for controlled N-doping in hard-templated, mesoporous carbon electrodes for high-performance electrochemical double-layer capacitors

Journal of Power Sources ◽

10.1016/j.jpowsour.2015.08.057 ◽

2015 ◽

Vol 298 ◽

pp. 193-202 ◽

Cited By ~ 33

Author(s):

Benjamin E. Wilson ◽

Siyao He ◽

Keegan Buffington ◽

Stephen Rudisill ◽

William H. Smyrl ◽

...

Keyword(s):

Ionic Liquids ◽

Double Layer ◽

Mesoporous Carbon ◽

High Performance ◽

Carbon Electrodes ◽

Electrochemical Double Layer Capacitors ◽

N Doping ◽

Electrochemical Double Layer ◽

Double Layer Capacitors

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A 4 Farad high energy electrochemical double layer capacitor prototype operating at 3.2 V (IES prototype)

Journal of Power Sources ◽

10.1016/j.jpowsour.2016.06.123 ◽

2016 ◽

Vol 326 ◽

pp. 162-169 ◽

Cited By ~ 12

Author(s):

A. Varzi ◽

C. Schütter ◽

J. Krummacher ◽

R. Raccichini ◽

C. Wolff ◽

...

Keyword(s):

Double Layer ◽

High Energy ◽

Double Layer Capacitor ◽

Electrochemical Double Layer Capacitor ◽

Electrochemical Double Layer

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Enhanced capacitive behaviour of graphene based electrochemical double layer capacitors by etheric substitution on ionic liquids

Journal of Power Sources ◽

10.1016/j.jpowsour.2020.228353 ◽

2020 ◽

Vol 467 ◽

pp. 228353 ◽

Cited By ~ 1

Author(s):

Shirin Siyahjani ◽

Saliha Oner ◽

Halide Diker ◽

Burak Gultekin ◽

Canan Varlikli

Keyword(s):

Ionic Liquids ◽

Double Layer ◽

Electrochemical Double Layer Capacitors ◽

Electrochemical Double Layer ◽

Double Layer Capacitors

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Physicochemical characterizations of novel dicyanamide-based ionic liquids applied as electrolytes for supercapacitors

RSC Advances ◽

10.1039/c8ra05820b ◽

2018 ◽

Vol 8 (54) ◽

pp. 31213-31223 ◽

Cited By ~ 3

Author(s):

Ramzi Zarrougui ◽

Rahma Hachicha ◽

Refka Rjab ◽

Sabri Messaoudi ◽

Ouassim Ghodbane

Keyword(s):

Ionic Liquids ◽

Double Layer ◽

Electrochemical Double Layer Capacitors ◽

Electrochemical Double Layer ◽

Double Layer Capacitors

Novel ionic liquids (ILs), containing a dicyanamide anion (DCA−), are synthesized and applied as suitable electrolytes for electrochemical double layer capacitors (EDLCs).

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