SLURRY FOR LITHIUM ION SECONDARY BATTERY POSITIVE ELECTRODES

Title:

SLURRY FOR LITHIUM ION SECONDARY BATTERY POSITIVE ELECTRODES

Document Type and Number:

WIPO Patent Application WO/2014/119790

Kind Code:

A1

Abstract:

[Problem] To provide a slurry for positive electrodes having excellent weight accuracy at the time of application, which enables the production of a lithium ion secondary battery that has high capacity and excellent cycle characteristics at high potentials, said lithium ion secondary battery being flexible and free from the occurrence of cracks in an active material layer when bent. [Solution] A slurry for lithium ion secondary battery positive electrodes according to the present invention contains a positive electrode active material, a binder, a conductive material and an organic solvent. The binder contains a nitrile group-containing acrylic polymer and a fluorine-containing polymer; and the viscosity ratio ((viscosity at a shear rate of 2 sec-1)/(viscosity at a shear rate of 20 sec-1)) of this slurry as measured by a coaxial double cylinder viscometer is 1.0-2.5.

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Inventors:

SUGIMOTO TAKUMI (JP)
MESUDA IKUYA (JP)

Application Number:

PCT/JP2014/052496

Publication Date:

August 07, 2014

Filing Date:

February 04, 2014

Export Citation:

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Assignee:

ZEON CORP (JP)

International Classes:

H01M4/139; H01M4/62; H01M10/052; H01M10/0566

Foreign References:

JP2012099251A	2012-05-24
JP2004303572A	2004-10-28
JP2006107896A	2006-04-20
JP2003157829A	2003-05-30
JP2009026515A	2009-02-05
JP4025995B2	2007-12-26
JP3598153B2	2004-12-08
JP4929573B2	2012-05-09

Other References: