Tetraglyme-Li+ Cation Solvate Structures: Models for Amorphous Concentrated Liquid and Polymer Electrolytes (II)

Wesley A. Henderson, Neil R. Brooks, Victor G. Young

Research output: Contribution to journalArticlepeer-review

85 Scopus citations

Abstract

Three crystal structures of tetraglyme coordination complexes with lithium salts are reported-(tetraglyme)1:LiAsF6, (tetraglyme) 1/2:LiBF4, and (tetraglyme)2/5:LiCF 3CO2. A novel form of six-coordinate Li+ cation coordination by the ether oxygens is found resembling double-helix dimers. Structural characterization of these materials provides insight into the molecular interactions which occur among the cations, anions, and ether oxygens. Such interactions are of interest for aiding in the understanding of the many factors which contribute to ionic conductivity mechanisms in amorphous concentrated liquid and solid poly(ethylene oxide) electrolytes.

Original languageEnglish (US)
Pages (from-to)4685-4690
Number of pages6
JournalChemistry of Materials
Volume15
Issue number24
DOIs
StatePublished - Dec 2 2003

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