Title:
COPOLYMER FOR POLYMER ELECTROLYTE, GEL POLYMER ELECTROLYTE COMPRISING SAME, AND LITHIUM SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2021/025535
Kind Code:
A1
Abstract:
Disclosed are a copolymer for a polymer electrolyte, a gel polymer electrolyte comprising same, and a lithium secondary battery. Specifically, disclosed are: a copolymer for a polymer electrolyte, comprising a fluorine-based polymer main chain, and a unit derived from an acrylate-based monomer or acrylate-based polymer including an ion-conductive functional group, which is grafted to the fluorine-based polymer main chain; and a gel polymer electrolyte comprising the copolymer so as to have improved lithium ion transport capability. In addition, the present invention can manufacture a lithium secondary battery comprising the gel polymer electrolyte, thereby having improved high-temperature safety.
Inventors:
PARK SOL JI (KR)
KIM SU JEONG (KR)
YOON JEONG AE (KR)
AHN KYOUNG HO (KR)
LEE CHUL HAENG (KR)
YOON SUNG SOO (KR)
KIM SU JEONG (KR)
YOON JEONG AE (KR)
AHN KYOUNG HO (KR)
LEE CHUL HAENG (KR)
YOON SUNG SOO (KR)
Application Number:
PCT/KR2020/010502
Publication Date:
February 11, 2021
Filing Date:
August 07, 2020
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M10/0565; C08F214/24; C08F220/18; C08F259/08; C08K5/00; H01M10/052; H01M10/42
Foreign References:
| KR20100068167A | 2010-06-22 | |||
| KR20180045813A | 2018-05-04 | |||
| KR20070051706A | 2007-05-18 |
Other References:
AKTAS EKEN GOZDE; ACAR METIN H: "PVDF-based shape memory polymers. European", POLYMER JOURNAL, vol. 114, 25 February 2019 (2019-02-25), pages 249 - 254, XP085670089, ISSN: 0014-3057, DOI: 10.1016/j.eurpolymj.2019.02.040
LIU FU, ABED MOHAMMAD REZA MOGHAREH, LI K: "Hydrophilic modification of P(VDF-co-CTFE) porous membranes", CHEMICAL ENGINEERING SCIENCE, vol. 66, no. 1, 1 January 2011 (2011-01-01), pages 27 - 35, XP055777753, ISSN: 0009-2509, DOI: 10.1016/j.ces.2010.09.026
CHOI HYOUNGWOO, KWON YOUNGNAM, JUNG YONGDOO, HONG SUNGPYO, TAK TAEMOON: "Preparation and Characterization of Antifouling Poly(vinylidene fluoride) Blended Membranes", JOURNAL OF APPLIED POLYMER SCIENCE, vol. 123, no. 1, 27 July 2011 (2011-07-27), pages 286 - 291, XP055777754, ISSN: 0021-8995, DOI: 10.1002/app.33846
See also references of EP 3965203A4
LIU FU, ABED MOHAMMAD REZA MOGHAREH, LI K: "Hydrophilic modification of P(VDF-co-CTFE) porous membranes", CHEMICAL ENGINEERING SCIENCE, vol. 66, no. 1, 1 January 2011 (2011-01-01), pages 27 - 35, XP055777753, ISSN: 0009-2509, DOI: 10.1016/j.ces.2010.09.026
CHOI HYOUNGWOO, KWON YOUNGNAM, JUNG YONGDOO, HONG SUNGPYO, TAK TAEMOON: "Preparation and Characterization of Antifouling Poly(vinylidene fluoride) Blended Membranes", JOURNAL OF APPLIED POLYMER SCIENCE, vol. 123, no. 1, 27 July 2011 (2011-07-27), pages 286 - 291, XP055777754, ISSN: 0021-8995, DOI: 10.1002/app.33846
See also references of EP 3965203A4
Attorney, Agent or Firm:
BAE, KIM & LEE IP (KR)
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