摘要
New ionic liquids based on S-alkylthiolanium cations with TFSI anions were synthesized and charac-terized.The physical and electrochemical properties,including melting point,thermal stability,solubility,viscosity,conductivity and electrochemical window,were reported.Relation between these properties and the structure of the cations was discussed.In this series,T4TFSI and T5TFSI have melting points below -60℃,and their conductivities are 2.10 mS/cm and 1.46 mS/cm;their electrochemical windows are 4.1 V and 4.5 V at room temperature.These cyclic alkylthiolanium-based ionic liquids are promising as novel electrolytes in various electrochemical devices,especially under low temperature condition.
New ionic liquids based on S-alkylthiolanium cations with TFSI anions were synthesized and charac- terized. The physical and electrochemical properties, including melting point, thermal stability, solubil- ity, viscosity, conductivity and electrochemical window, were reported. Relation between these proper- ties and the structure of the cations was discussed. In this series, T4TFSI and T5TFSI have melting points below -60℃, and their conductivities are 2.10 mS/cm and 1.46 mS/cm; their electrochemical windows are 4.1 V and 4.5 V at room temperature. These cyclic alkylthiolanium-based ionic liquids are promising as novel electrolytes in various electrochemical devices, especially under low temperature condition.
基金
Supported by National Key Project of China for Basic Research (Grant No. 2006CB202600)
the National High Technology Research and Development Program of China (Grant No.2007AA03Z222)
Technical Innovation Fund for Small and Mediumsized Enterprises of Jiangsu Province (Grant No.BC2007103)
