Invention Application
- Patent Title: NON-AQUEOUS ELECTROLYTE SOLUTION FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME
- Patent Title (中): 用于锂二次电池的非水电解质溶液和包括其的锂二次电池
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Application No.: US13201897Application Date: 2010-02-26
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Publication No.: US20120088161A1Publication Date: 2012-04-12
- Inventor: Su-Jin Yoon , Sung-Hoon Yu , Jong-Ho Jeon
- Applicant: Su-Jin Yoon , Sung-Hoon Yu , Jong-Ho Jeon
- Applicant Address: KR Seoul
- Assignee: LG CHEM, LTD.
- Current Assignee: LG CHEM, LTD.
- Current Assignee Address: KR Seoul
- Priority: KR10-2009-0016357 20090226; KR10-2010-0017589 20100226
- International Application: PCT/KR2010/001265 WO 20100226
- Main IPC: H01M10/0564
- IPC: H01M10/0564 ; H01M4/62 ; H01M10/0569

Abstract:
Disclosed is a non-aqueous electrolyte solution for a lithium secondary battery. The non-aqueous electrolyte solution includes an electrolyte salt and an organic solvent. The non-aqueous electrolyte solution further includes (a) a polyfunctional compound including two or more functional groups, at least one of which is an acryl group, and (b) an anion receptor selected from the group consisting of a borane compound, a borate compound and a mixture thereof. Further disclosed is a lithium secondary battery including the non-aqueous electrolyte solution. A stable solid electrolyte interface (SEI) film is formed on an anode of the lithium secondary battery. The amount of LiF in the SEI film is controlled, achieving improved cycle life characteristics of the battery.
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