【摘要】 以聚偏氟乙烯(PVDF)粉体为基材,采用预辐照接枝方法,在PVDF粉体上用乳液聚合接枝甲基丙烯酸缩水甘油酯(GMA),并采用溶液铸膜的方法制备了PVDF-g-PGMA膜。利用红外光谱(FTIR),扫描电子显微镜(SEM),压汞仪,电导率测试等分析表征手段对制备的PVDF-g-PGMA膜进行了表征。在氩气手套箱中组装成扣式电池,在电池测试系统上测试扣式电池的充放电循环性能。测试结果表明,在相同制备条件下,以PVDF-g-PGMA作为隔膜的锂离子电池性能优于以PVDF作为隔膜的锂离子电池性能。更多还原

【Abstract】 PVDF-g-PGMA powder was prepared by pre-irradiation graft polymerization technique and then the membranes were cast from PVDF-g-PGMA powder with different degrees of grafting(DG) using solvent evaporation method.The structure and the performance both of the PVDF and the PVDF-g-PGMA membranes were analyzed by means of Fourier transform infrared spectroscopy(FT-IR),scanning electron microscope(SEM),mercury porosimetry and lithium ion conductivity,respectively.After assembling 2032 coin type cell,the battery performances were also investigated.The results demonstrate that the PVDF-g-PGMA membranes possess better cell performance than pris-tine PVDF membrane.更多还原