Triethylammonium-based protic ionic liquids with sulfonic acids: Phase behavior and electrochemistry

Shmukler, L. E.; Груздев, М. С.; Kudryakova, N.O.; Fadeeva, Yu. A.; Kolker, A. M.; Safonova, L. P.

doi:10.1016/j.molliq.2018.06.059

Cited by 42 publications

(46 citation statements)

References 75 publications

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“…PILs based on triethylamine with sulfonic acids have been largely studied as electrolytes because they typically exhibit ionic conductivities and wide electrochemical windows. [19,26,27] Since [ [PTSA] À were approximately 4.9 and 3.4 mS cm À 1 ( Table 1); this is in the range of typical ionic conductivities of PILs formed between amines and sulfonic acids. [28,29] It is worth noting that the low conductivity of many PILs has been associated with a high viscosity and the poor mobility of ions in such a viscous medium (Table 1 and Figure S4 in the Supporting Information).…”

Section: Resultsmentioning

confidence: 78%

“…ences in the type and extent of the ion pairing and, ultimately, in the degree of ion stabilization. [19,22,27] In any case, the use of high temperatures was a serious drawback in comparison to room-temperature conditions given not only the intrinsic experimental difficulties associated with high-temperature measurements but also the well-known occurrence of ESW narrowing along with the temperature increase. [29,32] (in a 1 : 1 molar ratio) resulted in mixtures that were liquid at room temperature.…”

Section: Resultsmentioning

confidence: 99%

“…It is worth noting that ESWs of approximately 4.0 V vs. Ag wire are in the range of the best ESWs reported to date in PILs (Table S5 in the Supporting Information). [4,27,29,30,32,46,48] This wide ESW opened interesting perspectives for [C][Z][A]type ZPILs. For instance, as compared to aprotic ILs or salts like lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), narrow ESWs have limited the interest of PILs as electrolytes for electric double-layer capacitor (EDLCs) despite their easy synthesis and low cost.…”

Section: As Described In the Introduction For The Formation Of [Z][a]mentioning

confidence: 99%

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Aqueous Co‐Solvent in Zwitterionic‐based Protic Ionic Liquids as Electrolytes in 2.0 V Supercapacitors

Vicent-Luna

Calero

et al. 2020

ChemSusChem

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High-performance energy-storage devices are receiving great interest in sustainable terms as a required complement to renewable energy sources to level out the imbalances between supply and demand. Besides electrode optimization, a primary objective is also the judicious design of high-performance electrolytes combining novel ionic liquids (ILs) and mixtures of aqueous solvents capable of offering "à la carte" properties. Herein, it is described the stoichiometric addition of a zwitterion such as betaine (BET) to protic ILs (PILs) such as those formed between methane sulfonic acid (MSAH) or p-toluenesulfonic acid (PTSAH) with ethanolamine (EOA). This addition resulted in the formation of zwitterionic-based PILs (ZPILs) containing the original anion and cation as well as the zwitterion. The ZPILs prepared in this work ([EOAH] + [BET][MSA] À and [EOAH] + [BET] [PTSA] À) were liquid at room temperature even though the original PILs ([EOAH] + [MSA] À and [EOAH] + [PTSA] À) were not. Moreover, ZPILs exhibited a wide electrochemical stability window, up to 3.7 V vs. Ag wire for [EOAH] + [BET][MSA] À and 4.0 V vs. Ag wire for [EOAH] + [BET][PTSA] À at room temperature, and a high miscibility with both water and aqueous co-solvent (WcS) mixtures. In particular, "WcS-in-ZPIL" mixtures of [EOAH] + [BET][MSA] À in 2 H 2 O/ACN/DMSO provided specific capacitances of approximately 83 F g À 1 at current densities of 1 A g À 1 , and capacity retentions of approximately 90 % after 6000 cycles when operating at a voltage of 2.0 V and a current density of 4 A g À 1 .

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Section: Resultsmentioning

confidence: 78%

Section: Resultsmentioning

confidence: 99%

Section: As Described In the Introduction For The Formation Of [Z][a]mentioning

confidence: 99%

See 1 more Smart Citation

Aqueous Co‐Solvent in Zwitterionic‐based Protic Ionic Liquids as Electrolytes in 2.0 V Supercapacitors

Vicent-Luna

Calero

et al. 2020

ChemSusChem

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“…The vibration due to CH stretching appears usually in 3100-2900 cm −1 range [25] and stretching vibration bands in this wave number region can be seen in the FT-IR spectra of triethylamine [26]. Where the absorption peaks in 2660-2890 cm −1 range that usually appear for NH stretching of ammonium cation [25] cannot be seen in the triethylamine FT-IR spectra [26]. Therefore, comparing our FT-IR spectra for triethylammonium sulphate ionic liquid with the FT-IR spectra of the triethylamine [26], the peaks within the range of 2660-2900 cm −1 are attributed totally to NH stretching vibrations in the TEAS [25,26].…”

Section: Ft-ir Analysis Of Teasmentioning

confidence: 97%

“…It is evident from the figure that at wave number higher than 2700 cm −1 we can see two set of absorption bands in the range around 2660-2880 cm −1 and 3100-2900 cm −1 . The vibration due to CH stretching appears usually in 3100-2900 cm −1 range [25] and stretching vibration bands in this wave number region can be seen in the FT-IR spectra of triethylamine [26]. Where the absorption peaks in 2660-2890 cm −1 range that usually appear for NH stretching of ammonium cation [25] cannot be seen in the triethylamine FT-IR spectra [26].…”

Section: Ft-ir Analysis Of Teasmentioning

confidence: 98%

Synthesis, characterization and electrochemistry of triethyl ammonium sulphate ionic liquid

Khan

Muhammad

Shah

et al. 2020

Zeitschrift Für Physikalische Chemie

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Protic ionic liquids (PILs) being intrinsic proton conducting ionic species are considered as potential green electrolytes for study of electrocatalytic reactions and for fabrication of IL-based fuel cells (FCs) and batteries. We have prepared a sulfate anion based protic ionic liquid (PIL), triethylammonium sulfate (TEAS) through a reaction involving transfer of proton from H2SO4 to triethylamine (TEA). 1H NMR and FT-IR spectroscopic techniques were employed for confirmation of the synthesis of TEAS and water content of the PIL was quantified using coulometric Karl–Fischer (KF) titration. 1H NMR and FT-IR analysis confirm the synthesis of the PILs and KF-titration analysis shows that TEAS contains 1.43 w/w % water. Electrical conductivity of TEAS was determined at different temperatures showing that the PIL has excellent ionic conductivity that enhances with rise in temperature of the medium. The temperature dependence of the conductivity of the PIL follows the Arrhenius equation as the logσ versus 1/T plot is linear. The electrochemical windows (EWs) of the electrolyte were found using cyclic voltammetry at Pt and Au working electrodes and found to decrease with increase in temperature of the medium. The data revealed that the surfaces of the electrodes are covered with oxide layers due to oxidation of trace water (1.43 w/w %) present in the PIL. The oxide layers growth increase and their onset potential moves to less positive values as the temperature of the PILs is increased. The data was compared with the literature and would be helpful in understanding of the surface electrochemistry in this neoteric medium for being used as potential electrolyte in industry for various electrochemical applications.

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Recent Advances in Transparent Materials Based on Ionic Liquids and Their Applications in Sensors

Ye,

Geng,

Rao

et al. 2024

Adv Materials Technologies

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Since the 21st century, transparent flexible sensors (TFSs) have been widely employed in abundant fields, such as smart glasses, intelligent watches, robots, electronic skin, especially biomedicine. Presently, various materials have been developed, such as metal‐based, carbon‐based, conductive polymer‐based, and ionic liquid‐based (IL‐based) materials. Compared with the first three materials, IL, as a novel material, with the tendency of green chemistry development, has a high application prospect in TFSs. Based on this, this paper mainly discusses recent advances in TFSs based on ILs, with special emphasis on the role of ILs and the factors influencing transparency as well as electricity. The current challenges and opportunities for each type of sensors based on IL are also studied.

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Triethylammonium-based protic ionic liquids with sulfonic acids: Phase behavior and electrochemistry

Cited by 42 publications

References 75 publications

Aqueous Co‐Solvent in Zwitterionic‐based Protic Ionic Liquids as Electrolytes in 2.0 V Supercapacitors

Aqueous Co‐Solvent in Zwitterionic‐based Protic Ionic Liquids as Electrolytes in 2.0 V Supercapacitors

Synthesis, characterization and electrochemistry of triethyl ammonium sulphate ionic liquid

Recent Advances in Transparent Materials Based on Ionic Liquids and Their Applications in Sensors

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