Influence of Polar Organic Solvents in an Ionic Liquid Containing Lithium Bis(fluorosulfonyl)amide: Effect on the Cation-Anion Interaction, Lithium Ion Battery Performance, and Solid Electrolyte Interphase.
Influence of Polar Organic Solvents in an Ionic Liquid Containing Lithium Bis(fluorosulfonyl)amide: Effect on the Cation-Anion Interaction, Lithium Ion Battery Performance, and Solid Electrolyte Interphase.
复制标题
极性有机溶剂在含双(氟磺酰基)氨基锂的离子液体中的影响：对阳离子-阴离子相互作用、锂离子电池性能和固体电解质界面的影响
DOI：
10.1021/acsami.6b12751
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发表时间：
2016
影响因子：
9.5
通讯作者：
F. Endres
中科院分区：
文献类型：
--
作者：
A. Lahiri;M. Olschewski;F. Endres
离子液体-有机溶剂混合物最近已被研究作为潜在的电池电解质。然而，对于电池性能，这些混合物显示出矛盾的结果。在这篇手稿中，我们研究了向离子液体电解质1 M双（氟磺酰基）酰胺锂（LiFSI）-1-丁基-1-甲基吡咯烷鎓双（氟磺酰基）酰胺（[Py 1，4]FSI）中添加极性有机溶剂的影响，并测试了其用于锂离子电池应用。红外光谱和拉曼光谱表明，有机溶剂的加入明显改变了锂的溶剂化作用和离子液体中的阳离子-阴离子相互作用。从对电沉积的Ge的锂化/脱锂研究，发现与使用单独的离子液体和离子液体-低极性溶剂（碳酸二甲酯）混合物相比，离子液体-高极性有机溶剂（乙腈）混合物的存储容量在低C-速率（0.425 ℃）下最高。此外，XPS和AFM被用来评估固体电解质界面（SEI），其稳定性与锂存储容量的关联。
Ionic liquid–organic solvent mixtures have recently been investigated as potential battery electrolytes. However, contradictory results with these mixtures have been shown for battery performance. In this manuscript, we studied the influence of the addition of polar organic solvents into the ionic liquid electrolyte 1 M lithium bis(fluorosulfonyl)amide (LiFSI)–1-butyl-1-methylpyrrolidinium bis(fluorosulfonyl)amide ([Py1,4]FSI) and tested it for lithium ion battery applications. From infrared and Raman spectroscopy, clear changes in the lithium solvation and cation–anion interactions in the ionic liquid were observed on addition of organic solvents. From the lithiation/delithiation studies on electrodeposited Ge, the storage capacity for the ionic liquid–highly polar organic solvent (acetonitrile) mixture was found to be the highest at low C-rates (0.425 C) compared to using an ionic liquid alone and ionic liquid–less polar solvent (dimethyl carbonate) mixtures. Furthermore, XPS and AFM were used to evaluate the solid electrolyte interphase (SEI) and to correlate its stability with Li storage capacity.
影响因子：
3.3
作者：
Tsuzuki, S;Tokuda, H;Watanabe, M
通讯作者：
Watanabe, M
影响因子：
3.3
作者：
Fumino, Koichi;Reimann, Sebastian;Ludwig, Ralf
通讯作者：
Ludwig, Ralf