中文摘要：

以2-溴乙胺氢溴酸和N-甲基咪唑盐为原料合成了氨基功能化离子液体1-（2-胺乙基）-3-甲基咪唑溴盐（[NH2-emim]Br），用1HNMR和IR对所制备的离子液体进行了表征，测得25℃下[NH2-emim]Br的黏度26．691Pa·S、电导率0．1130mS·cm^-1，C02的溶解饱和度82％（摩尔分数），将不同含量的[NH2-emim]Br与[Emim]BF4、[Bmim]BF4、[Bmim]PF6组成二元复合离子液体，并用于CO2电化学还原研究，循环伏安研究表明，C02在[NH2-emim]Br（0．5％）．[Bmim]BF4复合离子液体中的还原峰电位较[Bmim]BF4正移0．4V，还原峰电流增大9倍，黏度降低为0．08227Pa·s，电导率增大至1．317mS·cm^-1，是一种较好的CO2电化学还原离子液体体系。

英文摘要：

Amine-functionalized ionic liquid, 1-（2-aminoethyl）-3-methyl imidazolium bromide （[NH2-emim]Br）, was synthesized from 2-bromoethylamine hydrobromide and N-methyl imidazole salt at reflux condition and characterized by 1H NMR and IR. Viscosity, electric conductivity and saturated carbon dioxide solubility in [NH2-emim]Br ionic liquid measured at 25℃ were 26.691 Pa·s, 0.1130 mS · cm^-1 and 82% by molar ratio, respectively. Binary ionic liquid composites of [NHE-emim]Br/[Emim]BF4, [NH2-emim]Br/[Bmim]BF4, and [NH2-emim]Br/[Bmim]PF6 were prepared at different mass ratios and used for electrochemical reduction of CO2. The results of cyclic voltammetry at room temperature showed that peak current of CO2 reduction in [NH2-emim]Br （0.5%）-[Bmim]BF4 was increased about 9 times than that in [Bmim]BF4 and reduction peak potential was shifted positively by 0.4 V. With viscosity decrease to 0.08227 Pa · s and electrical conductivity increase to 1.317 mS · cm^-1, the binary ionic liquid composite is a good ionic liquid system for CO2 electrochemical reduction.