NONAQUEOUS ELECTROLYTE SOLUTION AND LITHIUM SECONDARY BATTERY USING SAME

Title:

NONAQUEOUS ELECTROLYTE SOLUTION AND LITHIUM SECONDARY BATTERY USING SAME

Document Type and Number:

WIPO Patent Application WO/2005/029631

Kind Code:

A1

Abstract:

[PROBLEMS] The present invention provides a lithium secondary battery which is improved particularly in cycle characteristics. [MEANS FOR SOLVING PROBLEMS] Disclosed is a lithium secondary battery which uses a nonaqueous electrolyte solution obtained by dissolving an electrolyte salt in a nonaqueous solvent. The nonaqueous electrolyte solution further contains a pentafluorophenyloxy compound represented by the following formula (I): (I) (wherein R₁ represents a substituent selected from the group consisting of alkylcarbonyl groups having 2-12 carbon atoms, alkoxycarbonyl groups having 2-12 carbon atoms, aryloxycarbonyl groups having 7-18 carbon atoms and alkanesulfonyl groups having 1-12 carbon atoms, and at least one hydrogen atom of the substituent may be substituted by a halogen atom or an aryl group having 6-18 carbon atoms), a vinylene carbonate and/or 1,3-propane sultone.

Inventors:

ABE KOJI (JP)
KUWATA TAKAAKI (JP)

Application Number:

PCT/JP2004/013687

Publication Date:

March 31, 2005

Filing Date:

September 17, 2004

Export Citation:

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Assignee:

UBE INDUSTRIES (JP)
ABE KOJI (JP)
KUWATA TAKAAKI (JP)

International Classes:

C07C309/66; H01M10/0567; H01M6/16; H01M10/0525; H01M10/36; (IPC1-7): H01M10/40

Domestic Patent References:

WO2003077351A1	2003-09-18
WO2003077351A1	2003-09-18

Foreign References:

JP2000323169A	2000-11-24
JP2000156243A	2000-06-06
JP2000003724A	2000-01-07
JPH11329496A	1999-11-30
JPH11329490A	1999-11-30
JPH0950822A	1997-02-18
US5626981A	1997-05-06
US6033809A	2000-03-07
US20020001756A1	2002-01-03
EP1304758A1	2003-04-23
US6927001B1	2005-08-09
JP2000323169A	2000-11-24
JP2000156243A	2000-06-06
JPH11329496A	1999-11-30
JPH0950822A	1997-02-18

Other References: