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.
Patent No.:
Date of Patent:
Feb. 21, 2012
Filed:
Sep. 15, 2006
Ho Chun Lee, Daejeon, KR;
Tae Yoon Park, Daejeon, KR;
Yong Su Choi, Cheongju-si, KR;
Soo Jin Yoon, Gwangju-si, KR;
Hong Kyu Park, Daejeon, KR;
Hyun Min Jung, Daejeon, KR;
Jeong AE Ahn, Goyang-si, KR;
Ho Chun Lee, Daejeon, KR;
Tae Yoon Park, Daejeon, KR;
Yong Su Choi, Cheongju-si, KR;
Soo Jin Yoon, Gwangju-si, KR;
Hong Kyu Park, Daejeon, KR;
Hyun Min Jung, Daejeon, KR;
Jeong Ae Ahn, Goyang-si, KR;
LG Chem, Ltd., , KR;
Abstract
Disclosed is a lithium secondary battery comprising a cathode, an anode, an electrolyte and a separator, wherein the anode comprises an anode active material having a specific surface area of 3 m/g or less, and the electrolyte comprises 0.1˜6 parts by weight of a propane sultone-based compound based on 100 parts by weight of the electrolyte. The lithium secondary battery solves the problem of performance degradation caused by the use of an increased amount of a propane sultone-based compound required to form a SEI film on the surface of an anode upon the first charge cycle. Also, the lithium secondary battery can provide improved cycle characteristics and high-temperature storage characteristics.