文章编号：1004－5422(2021)03－0293－05                                               DOI:10.3969/j.issn.1004-5422.2021.03.012

赵  虔^1,2，马  令¹，吴修龙¹，许  也¹，郑乔天¹，钱扬顺¹

（1.成都大学 机械工程学院，四川 成都  610106；2.宜宾锂宝新材料有限公司，四川 宜宾  644604）

摘  要：通过非溶剂致相分离法制备聚偏氟乙烯—六氟丙烯高分子隔膜，以磷酸铁锂做正极，金属锂做负极，组装锂离子电池。通过制备不同厚度的隔膜，组装出锂离子电池并进行性能测试，对聚偏氟乙烯—六氟丙烯隔膜进行结构和性能优化。经过结构和性能参数对比，得到适用于锂离子电池聚偏氟乙烯—六氟丙烯隔膜的最佳厚度。
关键词：PVDF-HFP；隔膜；高分子；磷酸铁锂；锂离子电池
中图分类号：TB383.2;TM912               文献标识码：A

Preparation of PVDF-HFP Polymer Separator and Its Application in Lithium-Ion Batteries

 ZHAO Qian^1,2, MA Ling¹, WU Xiulong¹, XU Ye¹, ZHENG Qiaotian¹, QIAN Yangshun¹

(1.School of Mechanical Engineering, Chengdu University, Chengdu 610106, China;

2.Yibin Libao New Material Co.,Ltd., Yibin 644604, China)

Abstract：In this paper, the PVDF-HFP polymer separator was prepared by the non-solvent induced phase separation method, with lithium iron phosphate as the positive electrode and metal lithium sheet as the negative electrode, and a lithium ion battery was assembled. By preparing separators of different thicknesses, assembling lithium-ion batteries and performing performance tests, the structure and performance of PVDF-HFP separators were optimized. After comparing the structure and performance parameters, the optimal thickness suitable for PVDF-HFP separators for lithium-ion batteries was obtained.
Key words：PVDF-HFP; separator; high polymer; lithium iron phosphate; lithium-ion battery