【摘要】 将三乙胺作用后的全氟磺酸离子膜（PFSA）与咪唑基离子液体进行掺杂改性,分别以甲醇及水为介质制备了复合膜A和B,采用交流阻抗法测定了膜的电导率,结果表明,当温度从30℃升至90℃时,含5%、10%、15%和20%离子液体的复合膜A的电导率为0.92×10^-53.52×10^-5S·cm^-1,复合膜B的电导率为0.59×10^-52.38×10^-5S·cm^-1,而PFSA的电导率为0.30×10^-51.21×10^-5S·cm^-1,复合膜较PFSA膜的电导率增大2³倍,膜的电导率随温度的升高而增大;测定了-25⁰℃时PFSA及复合膜的电导率,由Arrhenius方程求解的复合膜A、B的活化能E为1.62².47 k J/mol。更多还原

【Abstract】 The composite membrane A and B were prepared using the perfluorinated sulfonic acid ion membrane which firstly acted with triethylamine then doped and modified with the imidazole based ionic liquids, respectively with methanol and water as a medium. The conductivity of membrane was determined by AC impedance method. The results show that when the temperature rises from 30 ℃ to 90 ℃, the electrical conductivity of composite membrane A which contained 5%, 10%, 15% and 20% ionic liquid is between 0.92×10^-53.52×10^-5S·cm^-1, the electrical conductivity of composite membrane B is between 0.59×10^-52.38×10^-5 S·cm^-1, and the conductivity of PFSA membrane is 0.30×10^-51.21×10^-5S·cm^-1, the conductivity of composite membrane increases 2³ times than that of PFSA membrane. The conductivity of membrane increased with the rise of temperature. The electrical conductivity of the composite membrane B and PFSA film were determined in range of-25⁰ ℃. The activation energy E of the composite membrane A and B were obtained between 1.62².47 k J/mol by means of the Arrhenius equation.更多还原