The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Oct. 31, 2017

Filed:

Jul. 31, 2014
Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Young Min Lim, Daejeon, KR;

Chul Haeng Lee, Daejeon, KR;

Doo Kyung Yang, Daejeon, KR;

Shul Kee Kim, Daejeon, KR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 10/0569 (2010.01); H01M 4/62 (2006.01); H01M 10/0567 (2010.01); H01M 10/052 (2010.01); H01M 10/0568 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01);
U.S. Cl.
CPC ...
H01M 10/0569 (2013.01); H01M 4/623 (2013.01); H01M 4/625 (2013.01); H01M 10/052 (2013.01); H01M 10/0567 (2013.01); H01M 10/0568 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 2300/0037 (2013.01); Y02E 60/122 (2013.01); Y02T 10/7011 (2013.01);
Abstract

Provided are a non-aqueous electrolyte solution, which includes a non-aqueous organic solvent including propylene carbonate (PC) and an ester-based solvent, and lithium bis(fluorosulfonyl)imide (LiFSI), and a lithium secondary battery including the non-aqueous electrolyte solution. According to the non-aqueous electrolyte solution of the present invention, since a robust solid electrolyte interface (SEI) may be formed on an anode during initial charge of a lithium secondary battery including the non-aqueous electrolyte solution, high-temperature cycle characteristics and capacity characteristics after high-temperature storage as well as low-temperature, room temperature, and high-temperature output characteristics may be simultaneously improved.


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