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Title:
CROSSLINKED POLYOLEFIN SEPARATOR, METHOD FOR MANUFACTURING CROSSLINKED POLYOLEFIN SEPARATOR, AND ELECTROCHEMICAL DEVICE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2021/091326
Kind Code:
A1
Abstract:
The present invention relates to a crosslinked polyolefin separator and an electrochemical device comprising same, wherein the separator has a ratio (A/B) of storage stress (G', storage modulus) (A) to loss stress (G", loss modulus) (B) that is two or more in a frequency-loss storage stress curve, in a range representing the frequency of the separator as 1 rad/s or less. According to the present invention, as a final crosslinked separator, a separator with improved safety may be provided by controlling the ratio of the storage stress to the loss stress to be higher such that elastic properties are maintained at a high temperature.

Inventors:
LEE JOO-SUNG (KR)
BAE WON-SIK (KR)
RYU BI-OH (KR)
HAN SUNG-JAE (KR)
Application Number:
PCT/KR2020/015550
Publication Date:
May 14, 2021
Filing Date:
November 06, 2020
Export Citation:
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Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M50/409; B29C48/00; B29C48/08; C08J9/26; C08J9/28; H01M4/525; H01M10/052; H01M50/40
Domestic Patent References:
WO2013065918A12013-05-10
Foreign References:
KR20160129580A2016-11-09
KR102037343B12019-10-28
JPH09216964A1997-08-19
US20090170005A12009-07-02
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
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