含[BMIM]Cl-ZnCl_2和非质子溶剂的凝胶聚合物电解质的合成

Gel Polymer Electrolytes Prepared from Vinyl Monomers in [BMIM]Cl-ZnCl_2 and Aprotic Solvents

以烯类单体MA、MMA、HEMA为基质,通过原位聚合合成了同时含离子液体[BMIM]Cl-ZnCl2和非质子溶剂的一系列新型凝胶聚合物电解质,用FTIR、AC、TG等测试技术对其结构和性能进行了表征。结果表明,聚合物电解质具有复合物结构;[BMIM]Cl-ZnCl2和非质子溶剂PC、DMC的加入使聚合物电解质的室温离子电导率大大增加,达2.83×10-3S/cm,且与温度的关系符合VTF方程;聚合物电解质的热分解温度大于275℃,显示出良好的热稳定性。

Gel polymer electrolytes with ionic liquid [ BMIM ] Cl-ZnCl2 and an aprotic solvent were prepared via in situ free radical polymerization from vinyl monomers MA, MMA or HEMA as matrix and studied. The structure and properities of the products were studied by means of FTIR, AC, and TG. The interactions and structure changes of the composites were investigated by FTIR. The combination of a Lewis acid ionic liquid, [ BMIM ] Cl-ZnCl2 with aprotic solvent PC or DMC strongly increased the ionic conductivity in comparison with the neat ionic liquid, which showed a highly ionic conductivity of up to 2.83×10^-3S/cm at room temperature. And the activation energies of ions were calculated according to VTF equation. The gel polymer electrolytes exhibited high decomposition temperatures of above 275℃.