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

被引:148
作者
Henderson, WA
McKenna, F
Khan, MA
Brooks, NR
Young, VG
Frech, R
机构
[1] Univ Minnesota, Dept Chem Engn & Mat Sci, Minneapolis, MN 55455 USA
[2] Univ Minnesota, X Ray Crystallog Lab, Minneapolis, MN 55455 USA
[3] Univ Minnesota, Dept Chem, Minneapolis, MN 55455 USA
[4] Univ Oklahoma, Dept Phys & Astron, Norman, OK 73019 USA
[5] Univ Oklahoma, Dept Chem & Biochem, Norman, OK 73019 USA
关键词
D O I
10.1021/cm047881j
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Crystal structures of glyme solvates with LiTFSI and LiBETI (TFSI- = bis(trifluoromethanesulfonyl)imide, BETI- = bis(perfluoroethanesulfonyl)imide) have been determined including (monoglyme)(1): LiBETI, (diglyme)(2):LiTFSI, (diglyme)(1/2):LiTFSI, and low-temperature (triglyme),: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.
引用
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页码:2284 / 2289
页数:6
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