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. 04, 2012
Filed:
Nov. 15, 2007
Na-rae Park, Suwon-si, KR;
Jin-bum Kim, Suwon-si, KR;
Jin-sung Kim, Suwon-si, KR;
Yong-shik Kim, Suwon-si, KR;
Na-Rae Park, Suwon-si, KR;
Jin-Bum Kim, Suwon-si, KR;
Jin-Sung Kim, Suwon-si, KR;
Yong-Shik Kim, Suwon-si, KR;
Samsung SDI Co., Ltd., Gongse-dong, Giheung-gu, Yongin-si, Gyeonggi-do, KR;
Abstract
An electrolyte for a lithium secondary battery, and a lithium secondary battery including the same are provided. The electrolyte includes: a cyclic ester; an organic solvent including a nitrile-containing solvent represented by Formula 1 at a content ranging from 1 to 5% by volume; and a lithium salt,R—C≡N  (1)wherein R is selected from the group consisting of a Cto Caliphatic hydrocarbon, a Cto Chalogenated aliphatic hydrocarbon, a Cto Caromatic hydrocarbon, and a Cto Chalogenated aromatic hydrocarbon. The electrolyte can improve swelling characteristics and discharge capacity characteristics at a low temperature, and realize equal or better performance in characteristics such as capacity, life span and the like, as compared to a conventional carbonate-containing electrolyte.