Lithium insertion in graphite from ternary ionic liquid-lithium salt electrolytes I. Electrochemical characterization of the electrolytes
Lithium insertion in graphite from ternary ionic liquid-lithium salt electrolytes I. Electrochemical characterization of the electrolytes
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DOI：
10.1016/j.jpowsour.2008.12.095
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发表时间：
2009-07-15
影响因子：
9.2
通讯作者：
Passerini, Stefano
中科院分区：
文献类型：
--
作者：
Appetecchi, Giovanni B.;Montanino, Maria;Passerini, Stefano
本文报道了三元室温离子液体-锂盐混合物作为锂离子电池系统电解质的化学-物理研究结果。通过将N-甲基-N-丙基吡咯烷鎓双（氟磺酰基）酰亚胺（PYR 13 FSI）和N-丁基-N-甲基吡咯烷鎓双（三氟甲磺酰基）酰亚胺（PYR 14 TFSI）离子液体与六氟磷酸锂（LiPF 6）或双（三氟甲磺酰基）酰亚胺锂（LiTFSI）混合来制备三元电解质。基于IL-LiX二元电解质中石墨电极的可循环性的初步结果开发了混合物。结果清楚地显示了两种离子液体对混合物的电化学性能的有益协同效应。(C)2009爱思唯尔有限公司版权所有。
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.