中文摘要：

设计合成了一种新型有机硅室温离子液体（SiN1IL）, 并对其化学结构和电化学窗口进行表征, 通过与具有高介电常数的丙烯碳酸酯（PC）/低粘度的乙腈（AN）匹配组成电解液, 其离子电导率达到商业实际应用的要求（19.6 mS·cm-1）. 对以活性炭（AC）为对称电极的超级电容器的电化学性能测试表明, SiN1IL 基电解液与活性炭有很好的界面相容性, 其高倍率充放电、阻抗性能优于商用四乙基四氟硼酸铵（Et4NBF4）/PC 电解液, 在电流密度为1000 mA·g-1的条件下, 工作电压为2.7 V, 其比电容为108 F·g-1.

英文摘要：

A novel room temperature organosilicon ionic liquid （SiN1IL） was synthesized and its chemical structure and electrochemical window were characterized. The ionic conductivity of SiN1IL/propylene carbonate （PC）/acetonitrile （AN） solution was 19.6 mS·cm-1, comparable with the commercial electrolytes currently used in supercapacitors. The electrochemical performance of the cells using activated carbon as electrodes and SiN1IL-based formula with PC/AN as electrolytes was systematically evaluated. SiN1IL/PC electrolyte exhibited superior rate capability and lower impedance compared to a conventional electrolyte （tetraethylammonium tetrafluoroborate （Et4NBF4）/PC）. Upon applying a working voltage of 2.7 V, the SiN1IL/PC cell had a specific capacitance of 108 F·g-1 at a current density of 1000 mA·g-1.