Ionic liquids based on functionalized guanidinium cations and TFSI anion as potential electrolytes

Fang, Shaohua; Yang, Li; Wang, Jixian; Li, Mingtao; Tachibana, Kazuhiro; Kamijima, Kouichi

doi:10.1016/j.electacta.2009.02.082

Cited by 72 publications

(62 citation statements)

References 56 publications

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“…The weight loss started at 235 C, estimated to be ~12.8%, could be ascribed to the introduction of three ester linkages in STIIL, which had slight lower thermal stability. This decomposition behavior compared well with that previously reporter determined by Kim and Lee and Yang et al [63,64] . They also found two distinct decomposition temperatures during their TGA test of ILs and attributed the weight loss at lower temperatures to the presence of methyl acetate group in their samples, resulting in the decrease of thermal stability of ILs remarkably.…”

Section: Resultssupporting

confidence: 85%

Synthesis of poly(ethylene glycol) functionalized star-shaped tricationic imidazolium based ionic liquid

Zhang

Yin

et al. 2014

Chin J Polym Sci

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We report on the preparation of a well-defined star-shaped tricationic ionic liquid possessing three arms of poly(ethylene glycol) functionalized imidazolium rings. Remarkable solubility was found in most of the organic solvents we used. Thermogravimetric analysis (TGA) exhibited excellent thermal stability and two distinct decomposition temperatures were attributed to two kinds of chemical degradation. Differential scanning calorimetry (DSC) was further employed to investigate the thermal phase transitions, that three different signals (T g , T c , and T m ) were shown upon the second heating process. Moreover, CH 2 Cl 2 solution of the ionic liquid expressed an excitation-wavelength dependent fluorescence response, leading to the facile modulation of photoluminescence behavior. This work represents an example of utilizing molecular design to construct novel ionic liquids and endow further potential to be used in the engineering materials.

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Section: Resultssupporting

confidence: 85%

Synthesis of poly(ethylene glycol) functionalized star-shaped tricationic imidazolium based ionic liquid

Zhang

Yin

et al. 2014

Chin J Polym Sci

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“…The same viscosity reduction trend has been observed for ether-functionalized ILs based on other cations such as pyrrolidinium, piperidinium, oxazolidinium and morpholinium, 43, 44, 79, 80 ammonium and piperidinium, 39, 41, 81 phosphonium, 81, 82 as well as guanidinium. 45, 83, 84 Interestingly, guanidinium ILs containing an ester group have considerably higher viscosities than ether-grafted ILs (~300 vs . ~60 mPa s).…”

Section: Physicochemical Properties Of Ether- and Hydroxyl-functiomentioning

confidence: 99%

Ether- and alcohol-functionalized task-specific ionic liquids: attractive properties and applications

2012

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In recent years, the designer nature of ionic liquids (ILs) has driven their exploration and exploitation in countless fields among the physical and chemical sciences. A fair measure of the tremendous attention placed on these fluids has been attributed to their inherent designer nature. And yet, there are relatively few examples of reviews which emphasize this vital aspect in an exhaustive or meaningful way. In this critical review, we systematically survey the physicochemical properties of the collective library of ether- and alcohol-functionalized ILs, highlighting the impact of ionic structure on features such as viscosity, phase behavior/transitions, density, thermostability, electrochemical properties, and polarity (e.g., hydrophilicity, hydrogen bonding capability). In the latter portions of this review, we emphasize the attractive applications of these functionalized ILs across a range of disciplines, including their use as electrolytes or functional fluids for electrochemistry, extractions, biphasic systems, gas separations, carbon capture, carbohydrate dissolution (particularly, the (ligno)celluloses), polymer chemistry, antimicrobial and antielectrostatic agents, organic synthesis, biomolecular stabilization and activation, and nanoscience. Finally, this review discusses anion-functionalized ILs, including sulfur- and oxygen-functionalized analogs, as well as choline-based deep eutectic solvents (DESs), an emerging class of fluids which can be sensibly categorized as semi-molecular cousins to the IL. Finally, the toxicity and biodegradability of ether- and alcohol-functionalized ILs are discussed and cautiously evaluated in light of recent reports. By carefully summarizing literature examples on the properties and applications of oxy-functional designer ILs up till now, it is our intent that this review offer a barometer for gauging future advances in the field as well as a trigger to spur further contemplation of these seemingly inexhaustible and—relative to their potential—virtually untouched fluids. It is abundantly clear that these remarkable fluidic materials are here to stay, just as certain design rules are slowly beginning to emerge. However, in fairness, serendipity also still plays an undeniable role, highlighting the need for both expanded in silico studies and a beacon to attract bright, young researchers to the field.

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“…The cathodic limiting potential of 1g1(2o1)-TFSI was about 0.7 V vs. Li/Li + , and the anodic limiting potential was about 4.8 V vs. Li/Li + . So its electrochemical window was about 4.1 V, which was almost identical with the value of this IL measured by using Ag as reference electrode [26]. The cathodic limiting potential vs. Li/Li + of 1g1(2o1)-TFSI was same as the two guanidinium IL without functional groups (1g13-TFSI and 1g22-TFSI), and close to imidazolium ILs [14,25,30].…”

Section: Lithium Redox In the Il Electrolytesmentioning

confidence: 89%

“…1, and the IL was prepared according to our reported method [26]. The IL was dried under high vacuum for more than 24 h at 100 • C before using.…”

Section: Methodsmentioning

confidence: 99%

“…A series of guanidinium ILs based on small cations and TFSI anion have been synthesized by our group, and it has been found that two guanidinium ILs (1g13-TFSI and 1g22-TFSI), which have similar cathodic limiting potentials to the ILs based on EMI cation, can also be used as electrolytes for lithium battery without additives [24,25]. Recently, eight functionalized guanidinium ILs based on small cations with ether group (methoxyethyl group, CH 3 OCH 2 CH 2 ) or ester group (methyl acetate group) and TFSI anion have been prepared by our group [26]. In this study, one ether-functionalized guanidinium IL with low viscosity was used as new electrolyte for Li/LiCoO 2 cell without additives, and the relationship between the electrolyte characteristics and the performances of Li/LiCoO 2 cells were studied more detailedly.…”

Section: Introductionmentioning

confidence: 98%

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One ether-functionalized guanidinium ionic liquid as new electrolyte for lithium battery

Fang

Tang

Tai

et al. 2011

Journal of Power Sources

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Ionic liquids based on functionalized guanidinium cations and TFSI anion as potential electrolytes

Cited by 72 publications

References 56 publications

Synthesis of poly(ethylene glycol) functionalized star-shaped tricationic imidazolium based ionic liquid

Synthesis of poly(ethylene glycol) functionalized star-shaped tricationic imidazolium based ionic liquid

Ether- and alcohol-functionalized task-specific ionic liquids: attractive properties and applications

One ether-functionalized guanidinium ionic liquid as new electrolyte for lithium battery

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