Study on lithium-ion secondary battery separator prepared by graft polymerization of GMA onto PVDF powder under pre- irradiation

YUAN Hongming; LI Jihao; YU Yang; LI Linfan; DENG Bo; YU Ming; LI Jingye

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Study on lithium-ion secondary battery separator prepared by graft polymerization of GMA onto PVDF powder under pre- irradiation

更新时间：2023-03-27

- Study on lithium-ion secondary battery separator prepared by graft polymerization of GMA onto PVDF powder under pre- irradiation
- Journal of Radiation Research and Radiation Processing Vol. 29, Issue 5, Pages: 266-270(2011)
- 作者机构：
  
  1.中国科学院上海应用物理研究所　上海　201800
- 作者简介：
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YUAN Hongming, LI Jihao, YU Yang, et al. Study on lithium-ion secondary battery separator prepared by graft polymerization of GMA onto PVDF powder under pre- irradiation. [J]. Journal of Radiation Research and Radiation Processing 29(5):266-270(2011)
DOI：

YUAN Hongming, LI Jihao, YU Yang, et al. Study on lithium-ion secondary battery separator prepared by graft polymerization of GMA onto PVDF powder under pre- irradiation. [J]. Journal of Radiation Research and Radiation Processing 29(5):266-270(2011) DOI：

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。

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 pristine PVDF membrane.

关键词

锂离子电池隔膜聚偏氟乙烯聚甲基丙烯酸缩水甘油酯预辐照接枝

Keywords

Lithium ion battery separatorPVDF-g-PGMAPre-irradiation graft polymerization

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