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:
Sep. 16, 2008
Filed:
Sep. 05, 2003
Yong-chul Park, Suwon, KR;
Won-il Jung, Seongnam, KR;
Geun-bae Kim, Suwon, KR;
Jae-phil Cho, Suwon, KR;
Cheol-soo Jung, Ohsan, KR;
Yong-Chul Park, Suwon, KR;
Won-Il Jung, Seongnam, KR;
Geun-Bae Kim, Suwon, KR;
Jae-Phil Cho, Suwon, KR;
Cheol-Soo Jung, Ohsan, KR;
Samsung SDI Co., Ltd., Suwon-si, KR;
Abstract
An electrolyte for a lithium battery includes a non-aqueous organic solvent, a lithium salt, and an additive comprising a) a sulfone-based compound and b) a Cto Corganic peroxide or azo-based compound. The electrolyte may further include a poly(ester)(meth)acrylate or a polymer that is derived from a (polyester)polyol with at least three hydroxyl (—OH) groups, where a portion or all of the hydroxyl groups are substituted with a (meth)acrylic ester and the remaining hydroxyl groups that are not substituted with the (meth)acrylic ester are substituted with a group having no radical reactivity. The lithium battery comprising the electrolyte of the present invention has a significantly improved charge-discharge and cycle life characteristics, recovery capacity ratio at high temperature, and swelling inhibition properties.