溶胶-凝胶法制备微孔复合聚合物电解质

Hybrid Gel Polymer Electrolyte Prepared by Sol-Gel Method

使用钛酸丁酯作为前驱体,在聚偏氟乙烯-六氟丙烯溶液中分解为T iO2,与聚合物基体进行复合,制备的聚合物膜吸附电解质溶液后成为微孔复合聚合物电解质(M CPE)。用SEM、DSC、FT-IR、XRD等方法对复合聚合物膜进行表征,并测试了M CPE的离子电导率,发现当复合聚合物膜中T iO2粒子的质量分数为8.2%时,聚合物电解质具有最高的离子电导率1.27×1-0 3S/cm。

A kind of micro-porous composite polymer electrolyte （MCPE） based on poly（vinylidene fiuoride-hexafluoropropylene） copolymer（P（VDF-HFP）） has been prepared by immersing a composite polymer film in non-aqueous electrolyte. The composite polymer film were doped with TiO2 particles, which obtained by sol-gel process using tetrabutyl titanate（TBT） as a precursor, and characterized by SEM, DSC, FT-IR and XRD technology. The ionic conductivity of the MCPE reaches the maximal value, 1.27×10^-3·cm^-1, when the polymer film contains 8.2% of TiO2 particles.