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

doi:10.5796/electrochemistry.83.824

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

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	824-827
Number of pages	4
Journal	Electrochemistry
Volume	83
Issue number	10
DOIs	https://doi.org/10.5796/electrochemistry.83.824
Publication status	Published - 2015

Keywords

Concentrated Electrolytes
Ionic Liquid
Lithium Batteries
Mass Transport

ASJC Scopus subject areas

Electrochemistry

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10.5796/electrochemistry.83.824

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

abstract = "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.",

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author = "Hirotsugu Hirayama and Naoki Tachikawa and Kazuki Yoshii and Masayoshi Watanabe and Yasushi Katayama",

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T1 - Ionic conductivity and viscosity of solvate ionic liquids composed of glymes and excess lithium bis(trifluoromethylsulfonyl)amide

AU - Hirayama, Hirotsugu

AU - Tachikawa, Naoki

AU - Yoshii, Kazuki

AU - Watanabe, Masayoshi

AU - Katayama, Yasushi

PY - 2015

Y1 - 2015

N2 - 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.

AB - 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.

KW - Concentrated Electrolytes

KW - Ionic Liquid

KW - Lithium Batteries

KW - Mass Transport

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JO - Electrochemistry

JF - Electrochemistry

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

Abstract

Keywords

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