Glyme-lithium bis(trifluoromethanesulfonyl)imide and glyme-lithium bis(perfluoroethanesulfonyl)imide phase behavior and solvate structures

Wesley A. Henderson, Fred McKenna, Masood A. Khan, Neil R. Brooks, Victor G. Young, Roger Frech

Research output: Contribution to journalArticle

115 Scopus citations

Abstract

Crystal structures of glyme solvates with LiTFSI and LiBETI (TFSI - = bis(trifluoromethanesulfonyl)imide, BETI - = bis(perfluoroethanesulfonyl)imide) have been determined including (monoglyme)i: LiBETI, (diglyme) 2:LiTFSI, (diglyme) 1/2:LiTFSI, and low-temperature (triglyme)i:LiBETI. These solvates, combined with the phase behavior of the salts with various glymes from DSC analysis, provide insight into the molecular interactions of lithium salts in ethoxy solvents commonly used for. solid polymer and liquid electrolytes. Many of the solvates appear to undergo order-disorder solid phase transitions. These are the first reported crystal structures containing the BETI - anion.

Original languageEnglish (US)
Pages (from-to)2284-2289
Number of pages6
JournalChemistry of Materials
Volume17
Issue number9
DOIs
StatePublished - May 3 2005

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