The preparation of quaternary ammonium-based ionic liquid containing a cyano group and its properties in a lithium battery electrolyte

Minato Egashira; Shigeto Okada; Jun Ichi Yamaki; Diego Alejandro Dri; Francesco Bonadies; Bruno Scrosati

doi:10.1016/j.jpowsour.2004.06.022

The preparation of quaternary ammonium-based ionic liquid containing a cyano group and its properties in a lithium battery electrolyte

Minato Egashira, Shigeto Okada, Jun Ichi Yamaki, Diego Alejandro Dri, Francesco Bonadies, Bruno Scrosati

Department of Advanced Device Materials

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

101 Citations (Scopus)

Abstract

A room temperature ionic liquid consisting of N,N,N,N,-cyanomethyl trimethyl ammonium (CTMA) cation and bis(trifluoromethane sulfone)imide (TFSI) anion was newly synthesized, and its electrochemical properties were investigated. This ionic liquid has a melting point of 35°C and an order of conductivity of 10^-4 S cm^-1. Lithium deposition/ dissolution tests in 0.2 mol dm^-3 LiTFSI/CTMATFSI electrolytes showed an improved cycle behavior compared with that of a Li electrolyte based on a tetraalkylammonium ionic liquid without a cyano group. It is suggested that such an improvement may be associated with the formation of a protective film on the lithium surface. Introducing a proper functional group is suggested to be effective to improve the interfacial properties of ionic liquid.

Original language	English
Pages (from-to)	240-244
Number of pages	5
Journal	Journal of Power Sources
Volume	138
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jpowsour.2004.06.022
Publication status	Published - Nov 15 2004

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

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The preparation of quaternary ammonium-based ionic liquid containing a cyano group and its properties in a lithium battery electrolyte. / Egashira, Minato; Okada, Shigeto; Yamaki, Jun Ichi; Dri, Diego Alejandro; Bonadies, Francesco; Scrosati, Bruno.

In: Journal of Power Sources, Vol. 138, No. 1-2, 15.11.2004, p. 240-244.

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

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AU - Bonadies, Francesco

AU - Scrosati, Bruno

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AB - A room temperature ionic liquid consisting of N,N,N,N,-cyanomethyl trimethyl ammonium (CTMA) cation and bis(trifluoromethane sulfone)imide (TFSI) anion was newly synthesized, and its electrochemical properties were investigated. This ionic liquid has a melting point of 35°C and an order of conductivity of 10-4 S cm-1. Lithium deposition/ dissolution tests in 0.2 mol dm-3 LiTFSI/CTMATFSI electrolytes showed an improved cycle behavior compared with that of a Li electrolyte based on a tetraalkylammonium ionic liquid without a cyano group. It is suggested that such an improvement may be associated with the formation of a protective film on the lithium surface. Introducing a proper functional group is suggested to be effective to improve the interfacial properties of ionic liquid.

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