New binary room-temperature molten salt electrolyte based on urea and LiTFSI

被引：102

作者：

Liang, HY

Li, H

Wang, ZX

Wu, F

Chen, LQ

Huang, XJ

机构：

[1] Chinese Acad Sci, Inst Phys, Lab Solid State Ion, Beijing 100080, Peoples R China

[2] Beijing Inst Technol, Sch Chem Engn & Mat Sci, Beijing 100081, Peoples R China

[3] Natl Dev Ctr High Technol Green Mat, Beijing 100081, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2001年 / 105卷 / 41期

关键词：

D O I：

10.1021/jp0119779

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：

A novel room-temperature molten salt electrolyte based on urea and lithium bis(trifluoromethane sulfone)imide (LiN(SO2CF3)(2), LiTFSI) has been synthesized and characterized by differential scanning calorimetry (DSC), Raman spectroscopy, ac impedance, and cyclic voltammetry. This electrolyte appears as a liquid at room temperature, though it is composed of two solids. DSC shows that its eutectic temperature is about -37.60 degreesC. Strong interactions between the two components observed by Raman spectroscopy weaken the bonding between the anions and the cations of LiTFSI, leading to the formation of a eutectic molten salt. The conduction behavior and the electrochemical window of this electrolyte have been evaluated by ac impedance spectroscopy and cyclic voltammetry, respectively.

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页码：9966 / 9969

页数：4

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