中文摘要：

将聚甲基丙烯酸甲酯（PMMA）包覆的氧化铝（Al2O3）高分散纳米杂化材料Al2O3@PMMA与聚偏氟乙烯-六氟丙烯（PVDF-HFP）共混,并与Celgard 2325膜复合,制备复合电解质隔膜。用SEM、交流阻抗和充放电测试等,研究复合隔膜的结构及电化学性能。Al2O3@PMMA/PVDF-HFP涂层可提高隔膜的离子电导率及吸液率、降低界面阻抗,以复合隔膜组装的LiCo1/3Ni1/3Mn1/3O2/Li扣式电池以8.0 C在2.84.3 V放电,比容量可达120 m Ah/g。

英文摘要：

Polymethylmethacrylate （PMMA） coated aluminium oxide （Al2O3 ） highly dispersed nano hybrid material Al2O3 @ PMMA was blended with poly （ vinylidenefluoride-eo-hexafluoroprepylene ） （ PVDF-HFP ）, then composited with Celgard 2325 membrane to prepared composite electrolyte separator. The structure and electrochemical performance of the composite separator were studied by SEM, AC impedance and charge-discharge tests. Al2O3 @ PMMA/PVDF-HFP coating could increase the ionic conductivity and liquid absorption of the separator, reduce the interfacial impedance. When discharged in 2. 8 - 4. 3 V with 8.0 C, the specific capacity of LiCol/3 Nil/3 Mnl/3 O2/Li cell assemble with the composite separator could reach to 120 mAh/g.