Preparation and Properties of Separator for Lithium-ion battery

Authors

Xu-mei REN, School of Chem. Engin. and Materials Sci., Beijing Inst. of Techn., Beijing 100081, China
Feng WU, School of Chem. Engin. and Materials Sci., Beijing Inst. of Techn., Beijing 100081, ChinaFollow
Chuan WU, School of Chem. Engin. and Materials Sci., Beijing Inst. of Techn., Beijing 100081, China
Han-jun LI, School of Chem. Engin. and Materials Sci., Beijing Inst. of Techn., Beijing 100081, China
Xue-jie HUANG, Lab. for Solid State Ionics, Inst. of Phys., Chinese Acad. of Scie., Beijing 100080, China

Corresponding Author

Feng WU(wufeng863@bit.edu.cn)

Abstract

Lithium-ion batteries are well adapted to the new multimedia applications. PP/PE based microporous film is commonly used as separator in commercial lithium ion batteries. Herewe report a microporous film which is superior to the commercial available separator. The microporous PVDF polymer separators were prepared by the phase inversion process. The pore size of the separator is Φ 7 μm , and it's porosity is 75 %. The membrane in LiPF₆-EC/DEC showedhigh ionic conductivity (above 10^-3 S/cm at room temperature), and good mechanical properties(10³ kg/cm²). The half-cells consisted of Li/PVDF separator/MCMB showed excellent cyclingcharacteristics and the stable discharge capacity is 302 mAh/g.

Keywords

Separator, Lithium ion battery, PVDF, Phase inverse

DOI Link

https://doi.org/10.61558/2993-074X.3255

Publication Date

2001-05-28

Online Available Date

2001-05-28

Revised Date

2000-09-18

Received Date

2000-05-19

Recommended Citation

Xu-mei REN, Feng WU, Chuan WU, Han-jun LI, Xue-jie HUANG. Preparation and Properties of Separator for Lithium-ion battery[J]. Journal of Electrochemistry, 2001 , 7(2): 234-237.
DOI: 10.61558/2993-074X.3255
Available at: https://jelectrochem.xmu.edu.cn/journal/vol7/iss2/17