Title:
LITHIUM BATTERY SEPARATOR AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/019203
Kind Code:
A1
Abstract:
The present invention relates to the technical field of lithium-ion batteries, and provides a lithium battery separator and preparation method therefor. The lithium battery separator comprises a base film and a polyolefin film stacked on one or both sides of the base film. The base film comprises, in parts by weight, 5-25% of polyethylene and 75-95% of a pore former, the molecular weight of the polyethylene being more than 2000,000. The lithium battery separator provided by the present invention has good size stability and shape retention capability, thereby effectively increasing the rupture temperature and mechanical strength of the separator and improving the security of the lithium battery separator during the application in lithium batteries.
Inventors:
XIAO WUHUA (CN)
YANG XUEMEI (CN)
WANG JINBO (CN)
CHEN XIUFENG (CN)
ZHU JIJUN (CN)
YANG XUEMEI (CN)
WANG JINBO (CN)
CHEN XIUFENG (CN)
ZHU JIJUN (CN)
Application Number:
PCT/CN2018/097066
Publication Date:
January 30, 2020
Filing Date:
July 25, 2018
Export Citation:
Assignee:
CHANGZHOU XINGYUAN NEW ENERGY MAT CO LTD (CN)
International Classes:
H01M50/443; H01M50/489; H01M50/491
Foreign References:
| CN104157816A | 2014-11-19 | |||
| CN102527260A | 2012-07-04 | |||
| KR20150118468A | 2015-10-22 |
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (CN)
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