Title:
POLYOLEFIN SEPARATOR AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2020/197198
Kind Code:
A1
Abstract:
Presented are a polyolefin separator, a method for producing same, and a secondary battery including same. The polyolefin separator is provided with: a polyolefin porous substrate including a plurality of fibrils and pores that form as the plurality of fibrils are overlaid on each other; and a coating layer which surrounds the outside of the plurality of fibrils included in the polyolefin porous substrate, and includes a crosslinked polymer, wherein, relative to the polyolefin porous substrate, the rate of change in the air permeability of the polyolefin separator provided with the coating layer is 20% or less, and the rate of change in basis weight is 4% or less.
Inventors:
HAN SUNG-JAE (KR)
LEE JOO-SUNG (KR)
BAE WON-SIK (KR)
RYU BI-OH (KR)
LEE JOO-SUNG (KR)
BAE WON-SIK (KR)
RYU BI-OH (KR)
Application Number:
PCT/KR2020/003910
Publication Date:
October 01, 2020
Filing Date:
March 20, 2020
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
B29C48/00; B29C48/08; C08J9/26; C08J9/36; H01M50/409; H01M50/491; H01M50/489
Foreign References:
| KR20160025897A | 2016-03-09 | |||
| KR101125013B1 | 2012-03-27 | |||
| KR101694473B1 | 2017-01-10 | |||
| KR101637477B1 | 2016-07-07 | |||
| KR20130093836A | 2013-08-23 | |||
| KR20190033188A | 2019-03-29 |
Other References:
See also references of EP 3937275A4
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
Download PDF:
Previous Patent: CATHODE ACTIVE MATERIAL PARTICLES FOR SULFIDE-BASED ALL-SOLID BATTERY
Next Patent: HAIR LOSS AND SCALP CARE METHOD
Next Patent: HAIR LOSS AND SCALP CARE METHOD