1-Methyl-3-butylimidazolium tetraflouroborate with activated carbon for electrochemical double layer supercapacitors

Denshchikov, K. K.; Izmaylova, Marianna; Жук, А. З.; Vygodskii, Yakov S.; Novikov, V. T.; Gerasimov, A.F.

doi:10.1016/j.electacta.2010.03.065

Cited by 59 publications

(21 citation statements)

References 7 publications

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“…The 4.2 V cell voltage was much higher than common aqueous hybrid capacitors ~2 V, owing to the low standard electrode potential of the protected Li electrode and the high overpotential for oxygen evolution of the MnO2 positive electrode. The cell voltage is even higher than EC devices operating in non-aqueous electrolytes, such as non-aqueous electric double-layer capacitors ((C2H5)4NBF4/acetonitrile; ~2.7 V), [28] ionic liquids (1-methyl-3-buthylimidazolium tetrafluoroborate; 3.5 V), [29] or commercial LICs (3.8 V). [30] Discharge curves at high current density exhibited a linear change with time, typical of capacitive charge release (Fig.…”

Section: Half-cell Evaluation Of Mno2 Electrodesmentioning

confidence: 99%

Development of a 4.2 V aqueous hybrid electrochemical capacitor based on MnO2 positive and protected Li negative electrodes

Shimizu

Makino

Takahashi

et al. 2013

Journal of Power Sources

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Section: Half-cell Evaluation Of Mno2 Electrodesmentioning

confidence: 99%

Development of a 4.2 V aqueous hybrid electrochemical capacitor based on MnO2 positive and protected Li negative electrodes

Shimizu

Makino

Takahashi

et al. 2013

Journal of Power Sources

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“…Earlier results suggested that the capacitance retention and operational safety at high temperatures is much better for SCs with ILs as electrolytes than those using non-aqueous electrolytes [11,25,75,[178][179][180][181][182][183][184][185][186][187][188]. It is also observed that SCs fabricated using ILs can be operated at high cell voltage, which helps the improvement of energy density of SCs to the extent of secondary batteries [180][181][182][183][184][185][186][187][188][189][190][191][192][193].…”

Section: Pristine Ionic Liquids As Electrolytesmentioning

confidence: 99%

“…They observed the IL electrolytes have a wide electrochemical stability window and better capacitance performance than organic electrolytes. Denshchikov et al [190] fabricated an SC device using nanostructured carbon electrodes and solvent-free IL 1Me 3 BuImBF 4 as electrolytes with the extreme specific capacitance of 111 F/g at ambient temperature. Shaikh et al [191] fabricated inexpensive and nontoxic Ru-doped CuO film as an electrode and Bronsted acid, 1-butyl-3-methylimidazolim bisulfite (Im 14 HSO 4 ) as an electrolyte for SCs.…”

Section: Pristine Ionic Liquids As Electrolytesmentioning

confidence: 99%

Ionic Liquid-Based Electrolytes for Energy Storage Devices: A Brief Review on Their Limits and Applications

et al. 2020

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Since the ability of ionic liquid (IL) was demonstrated to act as a solvent or an electrolyte, IL-based electrolytes have been widely used as a potential candidate for renewable energy storage devices, like lithium ion batteries (LIBs) and supercapacitors (SCs). In this review, we aimed to present the state-of-the-art of IL-based electrolytes electrochemical, cycling, and physicochemical properties, which are crucial for LIBs and SCs. ILs can also be regarded as designer solvents to replace the more flammable organic carbonates and improve the green credentials and performance of energy storage devices, especially LIBs and SCs. This review affords an outline of the progress of ILs in energy-related applications and provides essential ideas on the emerging challenges and openings that may motivate the scientific communities to move towards IL-based energy devices. Finally, the challenges in design of the new type of ILs structures for energy and environmental applications are also highlighted.Polymers 2020, 12, 918 2 of 37 and structural stability of the ionic species are extremely crucial and responsible for the efficient outputs in energy storage devices. In the light of this fact, high current (i.e., automotive applications) operating devices are required to have storage devices that have higher power density and faster ion transport properties. Previous studies have suggested that one of the most favorable approaches to simultaneously progress the safety, along with energy and power densities, is the incorporation of ILs into the electrolyte system [11].In past decades, room temperature ionic liquids (RTILs) have been acknowledged with noteworthy attention due to their excellent miscellaneous properties, such as thermal and chemical stability, tunable structure over the wide range of operating temperature, a broad electrochemical stability window, high ionic conductivity in the range of 10 −3 -10 −2 S cm −1 at room temperature, and non-flammability as a potential candidate for EES devices, such as LIBs [12], electric double-layer SCs [13][14][15], proton exchange membrane fuel cells, and solar cells [16][17][18][19]. Using ILs as an alternative to organic electrolytes has the advantage of improving the ions' mobility, as well as eliminating the hazards associated within the organic electrolytes. Additionally, ILs often have comparable zero or negligible vapor pressure at normal temperatures due to their high thermal stability. Because of the above statements, ILs are widely used as solvents or electrolytes for energy storage applications in recent times [7,18,[20][21][22][23][24][25][26][27].Typically, ILs are organic salts, also defined as molten salts, which have a lower melting point (<100 • C) with a wide degree of variation. Moreover, they are comprised of organic cations, such as an pyridinium (PY) [28], imidazolium (Im) [29][30][31][32], pyrrolidinium (PYR) [33][34][35][36], ammonium [37], and sulfonium [38], derivatives joined inorganic or organic anions, such as BF 4 − [39,40], PF 6 − [30], triflate (...

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“…For inorganic supercapacitor, the rated voltage is ranged 0.8 -1.5 V for a unit capacitor with inorganic electrolytes, such as H2SO4 and KOH due to the hydrolysis effect of water [17][18][19]. Meanwhile, the voltage limitation goes up to 2.5 -4.0 V for an organic one using organic electrolyte, usually formed by dissolving ammonium salt in organic liquid, such as acetonitrile [20] [22,[25][26][27] and graphene[22，28，29] were explored to be applied for supercapacitor materials since the specific surface usually is very large for different kinds of carbon-based materials. In addition to develop new type carbon materials, both chemical and electrochemical treatment in order to enhance the activity of surface of the electrode materials were also adopted to further increase the performance, for example, using hydrogen treatment to induce hydroxyl functional group to raise the efficiency of carbon electrode [30].…”

Section: Introductionmentioning

confidence: 98%

Studies on the equivalent serial resistance of carbon supercapacitor

Shi

Cai

et al. 2015

Electrochimica Acta

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1-Methyl-3-butylimidazolium tetraflouroborate with activated carbon for electrochemical double layer supercapacitors

Cited by 59 publications

References 7 publications

Development of a 4.2 V aqueous hybrid electrochemical capacitor based on MnO2 positive and protected Li negative electrodes

Development of a 4.2 V aqueous hybrid electrochemical capacitor based on MnO2 positive and protected Li negative electrodes

Ionic Liquid-Based Electrolytes for Energy Storage Devices: A Brief Review on Their Limits and Applications

Studies on the equivalent serial resistance of carbon supercapacitor

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