Ionic conductivity and viscosity of solvate ionic liquids composed of glymes and excess lithium bis(trifluoromethylsulfonyl)amide

Hirotsugu Hirayama, Naoki Tachikawa, Kazuki Yoshii, Masayoshi Watanabe, Yasushi Katayama

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Ionic conductivity and viscosity of lithium bis(trifluoromethylsulfonyl)amide (LiTFSA)-glyme solvate ionic liquids with the mole fraction of LiTFSA from 50.0 to 54.5mol% were investigated at 298-323 K. The ionic conductivity of the solvate ionic liquids was found to be inversely proportional to the viscosity, as expected from Walden's rule. The ionic conductivity of the solvate ionic liquid decreased with increasing the mole fraction of LiTFSA, probably due to formation of a bulky lithium species, [Li(TFSA)2]?, which forms at the compositions of more than 50mol% of LiTFSA.

Original languageEnglish
Pages (from-to)824-827
Number of pages4
Issue number10
Publication statusPublished - 2015



  • Concentrated Electrolytes
  • Ionic Liquid
  • Lithium Batteries
  • Mass Transport

ASJC Scopus subject areas

  • Electrochemistry

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