NON AQUEOUS ELECTROLYTE AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Title:

NON AQUEOUS ELECTROLYTE AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Document Type and Number:

WIPO Patent Application WO/2016/048104

Kind Code:

A1

Abstract:

The present invention provides a lithium secondary battery comprising: a non aqueous electrolyte comprising lithium bis(fluorosulfonyl)imide (LiFSI) and a fluorinated ether compound additive; a positive electrode comprising a lithium-nickel-manganese-cobalt oxide as the positive electrode active material thereof; a negative electrode; and a separation membrane. The non aqueous electrolyte for a lithium secondary battery, according to the present invention, forms a solid SEI film on the negative electrode during the initial charging of a lithium secondary battery comprising the non aqueous electrolyte, improving the output properties of the lithium secondary battery, and also improves the post-high-temperature-storage output properties and capacity properties.

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Inventors:

KIM SHUL KEE (KR)
LEE CHUL HAENG (KR)
LIM YOUNG MIN (KR)
KIM GWANG YEON (KR)

Application Number:

PCT/KR2015/010239

Publication Date:

March 31, 2016

Filing Date:

September 25, 2015

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)

International Classes:

H01M10/0567; H01M4/505; H01M4/525; H01M10/052; H01M10/0568

Foreign References:

KR20140066082A	2014-05-30
KR20120090755A	2012-08-17
KR20140082573A	2014-07-02
KR20140104384A	2014-08-28
KR20040024842A	2004-03-22

Other References: