【摘要】 以聚偏氟乙烯-六氟丙烯共聚物[P(VDF-HFP)]为基体,将3-乙基-1-甲基咪唑鎓四氟硼酸盐(EMIBF4)和3-丁基-1-甲基咪唑鎓六氟磷酸盐(BMIPF6)等室温离子液体作为离子源和增塑剂,制备了EMIBF4/P(VDF-HFP)和BMIPF6/P(VDF-HFP)凝胶型离子液体/聚合物电解质;通过核磁共振(1HNMR)谱和热失重方法(TG)分别对其结构和热稳定性进行了表征和热失重分析。由电化学性能测试考察了两类离子液体/P(VDF-HFP)聚合物电解质的分解电压、室温离子电导率及离子液体/P(VDF-HFP)的质量配比、温度等对电导率的影响。结果表明:所制备的离子液体/聚合物电解质在305℃时仍具有较好的热稳定性,其室温离子电导率均达10-3S/cm数量级以上,其中EMIBF4与P(VDF-HFP)的质量比为2∶1时室温电导率可达3.67mS/cm。更多还原

【Abstract】 Two kinds of room temperature ionic liquids, hydrophilic EMIBF4 and hydro phobic BMIPF6 were prepared by two-steps synthesis. The gel ionic liquid-polymer electrolytes prepared by incorporating these ionic liquids had higher decomposition temperatures. The electrochemical stability of the resulting ionic liquid-polymer electrolytes was studied by linear sweep voltammetry ,and the ionic conductivities of them were investigated by AC impedance measurement. The gel electrolytes prepared with ionic liquid EMIBF4∶P(VDF-HFP) mass ratio of 2∶1 exhibited excellent ionic conductivity up to 3.67 mS/cm .更多还原