ELECTRODE PROTECTIVE LAYER POLYMER AND SECONDARY BATTERY TO WHICH SAME IS APPLIED

Title:

ELECTRODE PROTECTIVE LAYER POLYMER AND SECONDARY BATTERY TO WHICH SAME IS APPLIED

Document Type and Number:

WIPO Patent Application WO/2020/022620

Kind Code:

A1

Abstract:

The present invention relates to an electrode protective layer polymer comprising a polymer (A) in which a monomer comprising a poly(alkylene oxide) and a monomer containing a heat-curable functional group or a radiation-curable functional group are grafted on a fluorine-based polymer. When an electrode is manufactured by coating an electrode active material layer with the polymer of the present invention and heat curing or radiation curing same, excellent lithium ion conductivity is exhibited since lithium ion flow is not interrupted, chemical resistance against an electrolytic solution is high, and a side reaction with an electrolytic solution, which occurs on the surface of an electrode active material, is inhibited by the characteristics of a uniform and flexible protective layer, and thus the voltage stability of a secondary battery can be improved.

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Inventors:

YOON JEONGAE (KR)
KWON SUJEE (KR)
JUNG BORA (KR)
YOON SUNG SOO (KR)
SON BYOUNGKUK (KR)
PARK EUNKYUNG (KR)
JANG MINCHUL (KR)

Application Number:

PCT/KR2019/005445

Publication Date:

January 30, 2020

Filing Date:

May 08, 2019

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)

International Classes:

H01M4/62; C08F214/24; C08F259/08; H01M4/13; H01M4/134; H01M10/052

Foreign References:

KR20150063870A	2015-06-10
KR20150100754A	2015-09-02
KR20050092722A	2005-09-22
US20050170255A1	2005-08-04
KR20180087897A	2018-08-03
KR20180087904A	2018-08-03
KR20160058274A	2016-05-25

Other References:

LIU, Y.: "Synthesis, characterization and electrochemical transport properties of the poly(ethyleneglycol)-grafted poly(vinylidenefluoride) nanoporous membranes", REACTIVE & FUNCTIONAL POLYMERS, 2001, pages 201 - 213, XP002624496, DOI: 10.1016/S1381-5148(01)00030-X

Attorney, Agent or Firm:

KIM, Sung Ho (KR)

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