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Title:
PREPARATION METHOD FOR PARA-ARAMID POLYMER SEPARATOR MADE BY ELECTROSPINNING AND USED FOR LITHIUM ION BATTERY
Document Type and Number:
WIPO Patent Application WO/2019/205589
Kind Code:
A1
Abstract:
Disclosed is a preparation method for a para-aramid polymer separator made by electrospinning and used for a lithium ion battery, comprising: dissolving a para-aramid polymer or a para-aramid fiber by adding a co-solvent, and then adding inorganic nanoceramic particles thereto to obtain a liquid mixture; performing mechanical stirring and sonication to disperse the inorganic ceramic particles uniformly, so as to obtain a dispersion; and performing electrospinning using the dispersion to obtain a primary inorganic/organic composite film, and then performing drying, so as to obtain a para-aramid polymer separator made by electrospinning and used for a lithium ion battery. A lithium ion battery separator prepared in the present invention has high porosity and high heat shrinkage resistance, as well as high ionic conductivity and good electrochemical stability, improving safety performance of a battery.

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Inventors:
WU, Di (No. 10, Heilongjiang Road YEDA, Yanta, Yantai Shandong 6, 264006, CN)
TANG, Kai (No. 10, Heilongjiang Road YED, Yantai Shandong 6, 264006, CN)
CHEN, Wenjian (No. 10, Heilongjiang RoadYantai, Shandong 6, 264006, CN)
MA, Haibing (No. 10, Heilongjiang Road YED, Yantai Shandong 6, 264006, CN)
Application Number:
CN2018/115437
Publication Date:
October 31, 2019
Filing Date:
November 14, 2018
Export Citation:
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Assignee:
YANTAI TAYHO ADVANCED MATERIALS CO. LTD. (No. 10, Heilongjiang Road YED, Yantai Shandong 6, 264006, CN)
International Classes:
H01M2/14
Domestic Patent References:
WO2015084951A12015-06-11
Foreign References:
CN108666501A2018-10-16
CN107761250A2018-03-06
CN107170942A2017-09-15
CN103537198A2014-01-29
Attorney, Agent or Firm:
XI'AN TONG DA PATENT AGENCY CO., LTD. (No. 32, Jinye Road High-tech Zon, Xi'an Shaanxi 3, 710003, CN)
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