Title:
リチウム二次電池用電解質及びリチウム二次電池
Document Type and Number:
Japanese Patent JP4671589
Kind Code:
B2
Abstract:
PURPOSE: Provided is an electrolyte for a lithium secondary battery, which provides excellent battery safety, and prevents gas generation and battery swelling under high temperature storage conditions. CONSTITUTION: The electrolyte for a lithium secondary battery comprises: a non-aqueous organic solvent including a cyclic carbonate and gamma-butyrolactone; an ester compound having an electron-withdrawing group; and at least two salts. Preferably, the ester compound is a cyclic ester compound and is added in an amount of 0.1-25 wt% based on the total weight of the electrolyte. Particularly, the electron-withdrawing group is selected from the group consisting of a halogen, cyano and nitro groups. The salts include LiBF4.
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Inventors:
Ryuichi Shimizu
Takitaro Yamaguchi
John Chorus
John Hyunze
No Hyun Gong
Takitaro Yamaguchi
John Chorus
John Hyunze
No Hyun Gong
Application Number:
JP2003274875A
Publication Date:
April 20, 2011
Filing Date:
July 15, 2003
Export Citation:
Assignee:
SAMSUNG SDI Co., LTD.
International Classes:
C07D317/38; H01M10/0569; C07D309/30; C07D317/42; C07D319/04; H01M4/133; H01M4/505; H01M4/525; H01M4/58; H01M4/587; H01M10/05; H01M10/0525; H01M10/0565; H01M10/0567; H01M10/0568
Domestic Patent References:
| JP2002352852A | ||||
| JP2003086248A | ||||
| JP2003086247A | ||||
| JP11195429A | ||||
| JP10154528A | ||||
| JP2002298912A | ||||
| JP11185807A | ||||
| JP2002329528A | ||||
| JP2003123837A |
Foreign References:
| EP0714148A1 |
Attorney, Agent or Firm:
Takashi Watanabe
Yasuhiko Murayama
Yasuhiko Murayama