用两步法合成了离子液体1-烯丙基-3-甲基咪唑四氟硼酸盐([ AMIM] BF4),将聚甲基丙烯酸甲酯(PMMA)引入离子液体[ AMIM] BF4中,制备出含离子液体[AMIM] BF4的新型凝胶聚合物电解质,采用非质子溶剂、纳米SiO2等对其进行了改性.用FT-IR、交流阻抗(AC)、TG、SEM等测试技术对其结构和性能进行了表征.结果表明,非质子溶剂碳酸丙烯酯(PC)、碳酸二甲酯(DMC)和纳米SiO2的加入使聚合物电解质的室温离子电导率增大,达5.25 ×10-3S/cm;电导率与温度的关系符合Arrhenius方程；几种凝胶聚合物电解质的热分解温度均高于300℃,显示出良好的热稳定性.
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