Low-viscosity and low-melting point asymmetric trialkylsulfonium based ionic liquids as potential electrolytes

Fang, Shaohua; Yang, Li; Wei, Chao; Peng, Chengxin; Tachibana, Kazuhiro; Kamijima, Kouichi

doi:10.1016/j.elecom.2007.09.003

Cited by 85 publications

(75 citation statements)

References 34 publications

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“…From figure 5, the curves are not straight lines (In order to clarify the curves, the red straight lines were drawn as reference, which obviously shows that the curves are not straight lines.). Hence, the experimental values do not follow the Arrhenius behavior expressed by equation (12). According to the discussion of Vila et al [26], the VFT equation for dynamic viscosity was also related to the Arrhenius equation.…”

Section: Dynamic Viscositymentioning

confidence: 99%

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Density, dynamic viscosity, and electrical conductivity of pyridinium-based hydrophobic ionic liquids

Liu

Welz‐Biermann

et al. 2013

The Journal of Chemical Thermodynamics

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Section: Dynamic Viscositymentioning

confidence: 99%

“…As a stable hydrophobic ILs anion, bis(trifluoromethylsulfonyl)imide [NTf 2 ] À type ILs is especially strikingly [5][6][7]. So, the physicochemical properties of [NTf 2 ] À type ILs were probed systematically [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Density, dynamic viscosity, and electrical conductivity of pyridinium-based hydrophobic ionic liquids

Liu

Welz‐Biermann

et al. 2013

The Journal of Chemical Thermodynamics

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“…The temperature dependence on dynamic viscosity was plotted for ILs [C n py][NTf 2 ] (n = 3, 6) (see Figure 6). By fitting ln η against T À1 , a fitting equation can be obtained according to the Arrhenius equation, and the Arrhenius equation is: 12,37 …”

Section: Articlementioning

confidence: 99%

Physicochemical Properties of Ionic Liquids [C₃py][NTf₂] and [C₆py][NTf₂]

Liu

Yang

et al. 2011

J. Chem. Eng. Data

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Air-and water-stable hydrophobic ionic liquids N-alkylpyridinium bis(trifluoromethylsulfonyl)imide ([C n py][NTf 2 ], n = 3, 6) were synthesized. The density, surface tension, dynamic viscosity, and electrical conductivity of [C 6 À ILs as a hydrophobic compound has attracted much more attention in some fields. 5À8Tokuda et al. 9 have studied the properties of a series of imidazolium-based ILs, for example, the melting temperature, glass transition temperature, dynamic viscosity, and electrical conductivity. The melting temperatures are lower than room temperature, so these ILs are liquid at room temperature; the decomposition temperatures are higher than 690 K, so these ILs exhibit excellent thermal stability. The electrical conductivities are also high enough to be applied in electrochemical devices. Oliveira et al.10 studied the properties of a series of pyridiniumbased ILs. The density and dynamic viscosity of the dried and saturated ILs were studied. The water content has a strong effect on the dynamic viscosity, but only a very small effect on density was observed. Jacquemin et al.11 have also studied the density and dynamic viscosity of several pure and watersaturated ILs. The same results were obtained for the effect of water content on the density and dynamic viscosity. The ILs with [NTf 2 ] À anion were studied widely because this type of ILs has a relatively low viscosity, a wide electrochemical window, and a high electrical conductivity to be applied in the electrochemical devices. 12À16In view of the above facts, the density, surface tension, dynamic viscosity, and electrical conductivity of the ILs [C n py][NTf 2 ] (n = 3, 6) were measured at different temperatures, except for the surface tension of [C 3 py][NTf 2 ]. The speed of sound was estimated by the Auerbach relation at the different temperatures. 17The standard molar entropy and lattice energy were estimated in terms of Glasser's theory. 18 Parachor was estimated by the equation reported in the ref 19. The molar enthalpy of vaporization was estimated in terms of Kabo's empirical equation. 20 The interstice volume, interstice fraction, and thermal expansion coefficient were estimated by the interstice model theory. 21,22 The VogelÀFulcherÀTammann (VFT) and Arrhenius equations were used to fit the temperature dependence on dynamic viscosity and electrical conductivity values.' EXPERIMENTAL SECTION Preparation of ILs [C n py][NTf 2 ] (n = 3, 6). N-Alkylpyridinium bromide ([C n py][Br], n = 3, 6) was synthesized according to the procedure described in earlier paper. 23 [C n py][NTf 2 ], n = 3, 6, were synthesized according to the ion exchange reaction. The 80 g of salt [C n py][Br], n = 3, 6 was placed in a 500 mL roundbottomed flask and dissolved in 30 mL of distilled water; the equivalent amount of bis(trifluoromethanesulfonyl)imide (HN-(SO 2 CF 3 ) (Rhodia Co., mass purity 99.9 %) was added dropwise

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“…Most of the aliphatic sulfonium ILs reported have lower viscosities at room temperature, and the viscosity of symmetric trialkylsulfonium-based ILs, for example S 222 TFSI, is just 33 mPa s at 25℃ [23] . And viscosities of S 223 TFSI, S 224 TFSI and S 225 TFSI, as the example of asymmetric trialkylsulfonium-based ILs, are 33 mPa s, 42 mPa s and 43 mPa s at 25℃ [25] . Even if having similar molecular weight of the cations, the alkylthiolanium-based ILs are more viscous than the corresponding trialkylsulfonium-based ILs.…”

Section: Viscosities Of the S-alkylthiolanium-based Saltsmentioning

confidence: 99%

“…Ionic liquids based on symmetric trialkylsulfonium cations and various anions, including N-(trifluoromethylsulfonyl) pentafluoroethylsulfonamide (CIC2 − ), bis(trifluoromethylsulfonyl)imide (TFSI − ), 2,2, 2-trifluoro-N-(trifluoromethylsulfonyl)acetamide(TSAC − ), have been investigated for low viscosity, high conductivity and high electrochemical stability by Matsumoto et al [22,23] . Recently, several ionic liquids based on asymmetric trialkylsulfonium cations with TFSI − and PF 6 − anions have been investigated, and the characteristics of these salts, including thermal properties, viscosity, conductivity and electrochemical window, have been reported [24,25] . Like pyrrolidinium and pyridinium, cyclic sulfonium…”

mentioning

confidence: 99%

Ionic liquids based on S-alkylthiolanium cations and TFSI anion as potential electrolytes

et al. 2009

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Low-viscosity and low-melting point asymmetric trialkylsulfonium based ionic liquids as potential electrolytes

Cited by 85 publications

References 34 publications

Density, dynamic viscosity, and electrical conductivity of pyridinium-based hydrophobic ionic liquids

Density, dynamic viscosity, and electrical conductivity of pyridinium-based hydrophobic ionic liquids

Physicochemical Properties of Ionic Liquids [C₃py][NTf₂] and [C₆py][NTf₂]

Ionic liquids based on S-alkylthiolanium cations and TFSI anion as potential electrolytes

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Low-viscosity and low-melting point asymmetric trialkylsulfonium based ionic liquids as potential electrolytes

Cited by 85 publications

References 34 publications

Density, dynamic viscosity, and electrical conductivity of pyridinium-based hydrophobic ionic liquids

Density, dynamic viscosity, and electrical conductivity of pyridinium-based hydrophobic ionic liquids

Physicochemical Properties of Ionic Liquids [C3py][NTf2] and [C6py][NTf2]

Ionic liquids based on S-alkylthiolanium cations and TFSI anion as potential electrolytes

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Physicochemical Properties of Ionic Liquids [C₃py][NTf₂] and [C₆py][NTf₂]