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:
Mar. 27, 2012
Filed:
Feb. 10, 2004
Soon Ho Ahn, Daejeon, KR;
Jae Hyun Lee, Daejeon, KR;
Jeong Ju Cho, Daejeon, KR;
Ho Chun Lee, Daejeon, KR;
MI Young Son, Seoul, KR;
Hyeong Jin Kim, Daejeon, KR;
Han Ho Lee, Daejeon, KR;
Soon Ho Ahn, Daejeon, KR;
Jae Hyun Lee, Daejeon, KR;
Jeong Ju Cho, Daejeon, KR;
Ho Chun Lee, Daejeon, KR;
Mi Young Son, Seoul, KR;
Hyeong Jin Kim, Daejeon, KR;
Han Ho Lee, Daejeon, KR;
LG Chem, Ltd., , KR;
Abstract
The present invention relates to a nonaqueous electrolyte solution containing new additives and a lithium secondary battery including the same. More particularly, the invention relates to a nonaqueous electrolyte solution containing a lithium salt, an electrolyte compound, a first additive compound with an oxidation initiation potential of more than 4.2 V, and a second additive compound with an oxidation initiation potential of more than 4.2 V, which is higher in oxidation initiation potential than the first additive, and deposits oxidative products or form a polymer film, in oxidation, as well as a lithium secondary battery including the same. The present invention can provide a lithium secondary battery excellent in both the battery performance and the battery safety in overcharge by the combined use of the first additive and the second battery as additives to the nonaqueous electrolyte solution.