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Patent Searching and Data


Title:
LITHIUM SECONDARY BATTERY HAVING IMPROVED HIGH-TEMPERATURE STORAGE CHARACTERISTICS
Document Type and Number:
WIPO Patent Application WO/2019/151725
Kind Code:
A1
Abstract:
The present invention relates to a lithium secondary battery comprising: a positive electrode; a negative electrode; a separator interposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte, the positive electrode containing a positive electrode active material represented by chemical formula 1 below, the non-aqueous electrolyte containing a non-aqueous organic solvent, a first lithium salt, lithium bis(fluorosulfonyl)imide as a second lithium salt, and an additive, wherein the molar ratio of the first lithium salt : the second lithium salt is 1:0.01 to 1:1, and the additive is a mixed additive containing fluorobenzene, tetravinyl silane, and tertiary butyl benzene at a weight ratio of 1:0.05:0.1 to 1:1:1.5. [Chemical formula 1] Li(NiaCobMnc)O2 In chemical formula 1, 0.65

Inventors:
LIM, Young Min (LG Chem Research Park, 188 Munji-ro,,Yuseong-gu, Daejeon, 34122, KR)
LEE, Chul Haeng (LG Chem Research Park, 188 Munji-ro,,Yuseong-gu, Daejeon, 34122, KR)
Application Number:
KR2019/001130
Publication Date:
August 08, 2019
Filing Date:
January 25, 2019
Export Citation:
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Assignee:
LG CHEM, LTD. (128 Yeoui-daero, Yeongdeungpo-gu, Seoul, 07336, KR)
International Classes:
H01M10/0568; H01M4/505; H01M4/525; H01M10/052; H01M10/0567
Foreign References:
KR20170110995A2017-10-12
KR20170104609A2017-09-15
US20160087307A12016-03-24
KR20170060857A2017-06-02
KR20150125928A2015-11-10
Attorney, Agent or Firm:
BAE, KIM & LEE IP GROUP (11th Floor, 343 Gangnam-daero,,Seocho-gu, Seoul, 06626, KR)
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