New Room-temperature Molten Salt Based on LiTFSI with Acetamide and Ethyleneurea

Abstract

Abstract: Thermal and electrochemical properties of new room-temperature molten salt based on LiTFSI with acetamide or ethyleneurea were studied by differential scanning calorimetry, ac impedance spectroscopy and cyclic voltammertry, respectively. These molten salts appear as liquid at room temperature though they are composed of two solids. DSC analysis shows that the molten salt has a excellent thermal stability and its eutectic temperature is about -62.18 ℃. The conductivity of LiTFSI-acetamide molten salt at molar ratio 1:6.5 is 1.08×10^-3 S/cm at 25 ℃ and 5.35×10^-3 S/cm at 60 ℃, and the electrochemical window of the sample at molar ratio 1:4.0 is about 3 V.

Key words: Room-temperature molten salt, Electrolyte, LiTFSI, Acetamide, Ethyleneurea

CLC Number:

O646

TrendMD:

CHEN Ren-Jie, WU Feng, LIANG Hong-Ying, ZHANG Cun-Zhong, . New Room-temperature Molten Salt Based on LiTFSI with Acetamide and Ethyleneurea[J]. Chem. J. Chinese Universities, 2004, 25(11): 2108.

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New Room-temperature Molten Salt Based on LiTFSI with Acetamide and Ethyleneurea

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