New room-temperature molten salt based on OZO of neutral molecule with LiTFSI

作者：Chen RJ; Wu F^*; Luan HL; Wu M; Yu HF

来源：Chemical Journal of Chinese Universities, 2004, 25(11): 2116-2118.

• room-temperature molten salt
• 1,3-oxazolidone
• LiTFSI
• thermal property
• electrochemical property

The new room-temperature molten salt was prepared based on LiTFSI[LiNC(SO2CF3)(2)] with OZO(C3H5NO2) which were not reported in literature. Its thermal and electrochemical properties were studied by differential scanning calorimetry, ac impedance spectroscopy and cyclic voltammertry respectively. The results indicated that the structure symmetry of the molecule was depressed and the extent of charges delocalization was expanded, because of introducing oxygen atom of differential electronegativity in OZO molecule. DSC analysis showed that the LiTFSI-OZO molten salt has the excellent thermal stability and its eutectic temperature is below about 223.15 K. Meanwhile, the conductivity of LiTFSI-OZO molten salt at a molar ratio of 1:4.5 is 0.75 x 10(-3) S/cm at 298.15 K and 3.50 x 10(-3) S/cm at 333.15 K. CV analysis showed that the electrochemical window of the sample is about 4 V.

• 出版日期2004-11-10
• 单位北京矿冶研究总院; 北京理工大学