COMPOSITION FOR GEL POLYMER ELECTROLYTE AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Title:

COMPOSITION FOR GEL POLYMER ELECTROLYTE AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Document Type and Number:

WIPO Patent Application WO/2017/146426

Kind Code:

A1

Abstract:

The present invention relates to a composition for a gel polymer electrolyte and a lithium secondary battery comprising the same and, more specifically, the purpose of the present invention is to provide a secondary battery in which an isocyanate-containing monomer is introduced to a composition for a gel polymer electrolyte so as to induce a urethane reaction with LiOH on the surface of a lithium transition metal oxide such that a coating layer including a urethane bond-containing oligomer is formed on the surface of the lithium transition metal oxide, thereby suppressing a side reaction due to HF in the battery, improving a capacity characteristic, and increasing an adhesive force between a cathode and a separation film so as to suppress a battery swelling phenomenon.

Inventors:

OH JEONG WOO (KR)
AHN KYOUNG HO (KR)
LEE CHUL HAENG (KR)
JUNG YI JIN (KR)
PARK SOL JI (KR)

Application Number:

PCT/KR2017/001830

Publication Date:

August 31, 2017

Filing Date:

February 20, 2017

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)

International Classes:

H01M10/0565; C08F220/44; C09D175/04; H01M2/10; H01M4/131; H01M10/052; H01M10/0568; H01M10/0569

Foreign References:

JP2002033015A	2002-01-31
KR20150007977A	2015-01-21
JP2001176555A	2001-06-29
KR20030030552A	2003-04-18
KR20030015709A	2003-02-25

Other References: