期刊
JOURNAL OF POWER SOURCES
卷 192, 期 2, 页码 599-605出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2008.12.095
关键词
N-alkyl-N-methylpyrrolidinium bis(trifluoromethansulfonyl)imide; Ionic liquid; Synthesis; Ionic conductivity; Electrochemical stability
资金
- European Commission within the FP6 STREP Projects ILHYPOS [TST4-CT-2005-518307]
- ILLIBATT [NMP3-CT-2006-033181]
In this paper we report the results of chemical-physical investigation performed on ternary room temperature ionic liquid-lithium salt mixtures as electrolytes for lithium-ion battery systems. The ternary electrolytes were made by mixing N-methyl-N-propyl pyrrolidinium bis(fluorosulfonyl) imide (PYR13FSI) and N-butyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl) imide (PYR14TFSI) ionic liquids with lithium hexafluorophosphate (LiPF6) or lithium bis(trifluoromethanesulfonyl)imide (LiTFSI). The mixtures were developed based on preliminary results on the cyclability of graphite electrodes in the IL-LiX binary electrolytes. The results clearly show the beneficial synergic effect of the two ionic liquids on the electrochemical properties of the mixtures. (C) 2009 Elsevier B.V. All rights reserved.
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