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:
Jul. 13, 2010
Filed:
Jan. 12, 2006
Koji Abe, Yamaguchi, JP;
Takaaki Kuwata, Yamaguchi, JP;
Koji Abe, Yamaguchi, JP;
Takaaki Kuwata, Yamaguchi, JP;
UBE Industries, Ltd., Ube-shi, JP;
Abstract
The present invention provides a nonaqueous electrolytic solution exhibiting excellent battery characteristics such as electrical capacity, cycle property and storage property and capable of maintaining the battery characteristics for a long tire, and a lithium secondary battery using the nonaqueous electrolytic solution. A nonaqueous electrolytic solution for a lithium secondary battery, in which an electrolyte salt is dissolved in a nonaqueous solvent, containing 0.1 to 10% by weight of an ethylene carbonate derivative represented by the general formula (I) shown below, and 0.01 to 10% by weight of (A) a triple bond-containing compound and/or (B) a pentafluorophenyloxy compound represented by the general formula (X) shown below: wherein Rto Reach independently represents a hydrogen atom, a halogen atom, an alkenyl group, an alkynyl group or an aryl group, provided that ethylene carbonate is excluded from the definition of the ethylene carbonate derivative, wherein Rrepresents an alkylcarbonyl group, an alkoxycarbonyl group, an aryloxycarbonyl group or an alkanesulfonyl group.