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:
Jun. 30, 2009
Filed:
Sep. 10, 2003
Jin-hee Kim, Seoul, KR;
Jin-sung Kim, Che nan, KR;
Sang-moon Hwang, Cheonan, KR;
Meen-seon Paik, Cheonan, KR;
Hak-soo Kim, Kumi, KR;
Jin-Hee Kim, Seoul, KR;
Jin-Sung Kim, Che nan, KR;
Sang-Moon Hwang, Cheonan, KR;
Meen-Seon Paik, Cheonan, KR;
Hak-Soo Kim, Kumi, KR;
Samsung SDI Co., Ltd., Suwon-si, KR;
Cheil Industries Inc., Kumi-si, KR;
Abstract
An electrolyte for a lithium secondary battery includes lithium salts, a non-aqueous organic solvent, and additive compounds. The additive compounds added to the electrolyte of the present invention decompose earlier than the organic solvent to form a conductive polymer layer on the surface of a positive electrode, and prevent decomposition of the organic solvent. Accordingly, the electrolyte inhibits gas generation caused by decomposition of the organic solvent at initial charging, and thus reduces an increase of internal pressure and swelling during high temperature storage, and also improves safety of the battery during overcharge.