分离器(采油)
热稳定性
电解质
复合材料
锂(药物)
离子电导率
聚合物
制作
电池(电)
作者
Zhenyu Cui,Haobo Shi,Jinyue Ding,Jing Zhang,Hong Wang,Hao Wang
标识
DOI:10.1016/j.matlet.2018.06.082
摘要
Abstract The poly (vinylidene fluoride)/polyester (PVDF/PET) separator for lithium ion battery was successfully prepared using thermally induced phase separation (TIPS) technique for the first time. PET was used to enhance thermostability and regulate the micro-structure of separator. The results indicated that although solid-liquid phase separation occurred for PVDF/PET/diluent dope, the introduction of PET is in favor of forming network structure, which can be attributed to the change of compatibility and confined crystallization of PVDF. Compared with the pristine separator, the blend separator exhibited a better thermostability, higher capacity (151.5 mAh g−1 vs 133.7 mAh g−1 for initial discharge capacity) and decomposition voltage (4.7 V vs 4.5 V). The investigations suggested that the prepared PVDF/PET separator is a good candidate for lithium ion battery.
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