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. 29, 2010
Filed:
Apr. 02, 2004
Jin-hee Kim, Seoul, KR;
Jin-sung Kim, Cheonan-si, KR;
Sang-moon Hwang, Cheonan-si, KR;
Meen-seon Paik, Cheonan-si, KR;
Hak-soo Kim, Kumi-si, KR;
Jin-Hee Kim, Seoul, KR;
Jin-Sung Kim, Cheonan-si, KR;
Sang-Moon Hwang, Cheonan-si, KR;
Meen-Seon Paik, Cheonan-si, KR;
Hak-Soo Kim, Kumi-si, 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, which initiates decomposition at 4V to 5V and show a constant current maintenance plateau region of more than or equal to 0.5V at measurement of LSV (linear sweep voltammetry). 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 by increased electrochemical energy and heat at overcharge. The conductive polymer layer prevents decomposition of the organic solvent. Accordingly, the electrolyte inhibits gas generation caused by decomposition of the organic solvent during high temperature storage, and also improves safety of the battery during overcharge.