The relaxation field for the general case of electrolyte mixtures

The applicability of the equation derived for calculating the dynamic viscosity of ternary non-electrolyte mixtures, to the correlation of viscosity data of the H2O- K2CO3/KHCO3 system is verified in this work. It was found out that the values of dynamic viscosity obtained experimentally are in good agreement with the viscosity values calculated from this equation. The equation constants - interaction coefficients - were determined from the measurements of dynamic viscosity on mixing the basic solutions of K2CO3 and KHCO3 of known concentration. The correlation equation makes it possible to calculate viscosity of the K2CO3/KHCO3 solutions in the K2CO3 and KHCO3 concentration range from 0 to about 2.0 kmol m-3.

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A unified thermodynamic framework to compute the hydrate formation conditions of acidic gas/water/alcohol/electrolyte mixtures up to 186.2 MPa

Energy ◽

10.1016/j.energy.2021.120735 ◽

2021 ◽

pp. 120735

Author(s):

Wenlong Jia ◽

Fan Yang ◽

Changjun Li ◽

Ting Huang ◽

Shuoshuo Song

Keyword(s):

Hydrate Formation ◽

Electrolyte Mixtures ◽

Thermodynamic Framework ◽

Formation Conditions ◽

Water Alcohol

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Synthesis and Use of Zwitterion Bearing Sulfonyl(trifluoromethane sylfonyl)imide Anion as Additive for Polymer Electrolytes

Applied Sciences ◽

10.3390/app10217724 ◽

2020 ◽

Vol 10 (21) ◽

pp. 7724

Author(s):

Elisabetta Fedeli ◽

Andriy Kvasha ◽

Didier Gigmes ◽

Trang N. T. Phan

Keyword(s):

Transition Temperature ◽

Polymer Electrolytes ◽

Solid Polymer Electrolyte ◽

Solid Polymer ◽

Electrolyte Mixtures ◽

Poly Ethylene Glycol ◽

Imidazolium Cation ◽

Ethylene Glycol Dimethyl Ether ◽

Poly Ethylene Oxide ◽

Poly Ethylene

In order to improve the electrochemical properties of poly(ethylene oxide), a well-known-solid polymer electrolyte, by adding zwitterion molecules, the synthesis of a new zwitterion (ZN) having imidazolium cation and sulfonyl(trifluoromethane sulfonyl)imide anion is investigated. The addition of different amounts of ZN to the mixture of lithium bis(trifluoromethane sulfonyl)imide (LiTFSI) and poly(ethylene glycol)dimethyl ether (PEGDM) of 1000 g mol−1 does not significantly affect the transition temperature of PEGDM but causes a slight decrease in ionic conductivity of the electrolyte mixtures. However, even with the presence of only 0.05 mole fraction of ZN, the anodic stability of LiTFSI/PEGDM based electrolytes is improved to over 4.5 V vs. Li+/Li at 25 °C. This makes the new synthesized zwitterion a promising electrolyte’s additive for high voltage batteries.

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