COPOLYMER FOR POLYMER ELECTROLYTE, GEL POLYMER ELECTROLYTE COMPRISING SAME, AND LITHIUM SECONDARY BATTERY

Title:

COPOLYMER FOR POLYMER ELECTROLYTE, GEL POLYMER ELECTROLYTE COMPRISING SAME, AND LITHIUM SECONDARY BATTERY

Document Type and Number:

WIPO Patent Application WO/2021/025521

Kind Code:

A1

Abstract:

Disclosed in the present invention are a copolymer for a polymer electrolyte, a gel polymer electrolyte comprising same, and a lithium secondary battery. More specifically, disclosed are a copolymer for a polymer electrolyte and a gel polymer electrolyte having improved lithium-ion conductivity by comprising same, the copolymer comprising (A) a fluoropolymer and (B) a unit derived from an acrylate-based monomer or acrylate-based polymer, wherein the unit derived from the acrylate-based monomer or acrylate-based polymer is grafted onto the fluoropolymer, and a weight ratio of the fluoropolymer to the unit derived from the acrylate-based monomer or acrylate-based polymer is 1:99 to 40:60. In addition, the present invention may enable the production of a lithium secondary battery having improved stability at high temperature by comprising the gel polymer electrolyte.

Inventors:

PARK SOL JI (KR)
YOON JEONG AE (KR)
AHN KYOUNG HO (KR)
KIM SU JEONG (KR)
LEE CHUL HAENG (KR)
YOON SUNG SOO (KR)

Application Number:

PCT/KR2020/010476

Publication Date:

February 11, 2021

Filing Date:

August 07, 2020

Export Citation:

Click for automatic bibliography generation Help

Assignee:

LG CHEMICAL LTD (KR)

International Classes:

H01M10/0565; C08F214/24; C08F220/18; C08F259/08; C08K5/00; H01M10/052; H01M10/42

Domestic Patent References:

WO2010113971A1

2010-10-07

Foreign References:

KR100796989B1	2008-01-22
KR20180026358A	2018-03-12
KR100796990B1	2008-01-22
JPH11329064A	1999-11-30
KR20070051706A	2007-05-18

Other References: