LiAsF6 Solutions in the Propylene Carbonate-Dimethylsulfoxide Mixed Solvent: The Conductivity and Electrochemical Stability

被引：1

作者：

Tyunina, E. Yu. ^{[1
]}

Chekunova, M. D. ^{[2
]}

机构：

[1] Russian Acad Sci, Krestov Inst Solut Chem, Ivanovo 153045, Russia

[2] Ivanovo State Polytech Univ, Ivanovo 153003, Russia

来源：

RUSSIAN JOURNAL OF ELECTROCHEMISTRY | 2023年 / 59卷 / 12期

关键词：

lithium hexafluoroarsenate; propylene carbonate; dimethylsulfoxide; conductivity; activation energy; decomposition potentials; LITHIUM-ION; DIMETHYL-SULFOXIDE; TRANSPORT-PROPERTIES; ELECTROLYTES; ACETONITRILE; HEXAFLUOROARSENATE; SOLVATION; BATTERIES; SALTS; ELECTROCONDUCTIVITY;

D O I：

10.1134/S1023193523120133

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The conductivity of LiAsF6 solutions in the propylene carbonate-dimethylsulfoxide mixed solvent with the ionophore molality from 0.2 to 1.4 mol/kg is measured over wide temperature range (T = 253.15, 263.15, 273.15, 283.15, 293.15, 303.15, 313.15, 323.15, and 333.15 K) at the dimethylsulfoxide content in the mixed solvent changing from 0.2 to 0.75 molar fraction. The conductivity of LiAsF6 solutions in dimethylsulfoxide is studied over the 293.15-333.15 K temperature range. The concentration dependences of the studied solutions' conductivity obey the Casteel-Amis equation. With the using of the transition state theory, the solvent and ionophore contributions into the ionic conductance activation energy were determined. The LiAsF6 solutions in the propylene carbonate-dimethylsulfoxide mixed solvent are shown to have a narrower electrochemical window as compared with the ionophore solutions in the propylene carbonate and dimethylsulfoxide.

引用

页码：1107 / 1117

页数：11

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