リチウムイオン二次電池電極用バインダー、およびその利用

Title:

リチウムイオン二次電池電極用バインダー、およびその利用

Document Type and Number:

Japanese Patent JP4329169

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To improve charge/discharge cycle characteristic and storage characteristic of a battery under a high temperature and a low temperature by containing polybutadiene with cis-1,4 structure content of a prescribed range. SOLUTION: Polybutadiene included in a binder has a cis-1,4 structure content in a molecule at the lower limit 5% and the upper limit 50% in the mol standard. In using the polybutadiene as the finder, at may be used singularly and, ppolymer generally used as a binder can be used jointly. The binder composition is dispersions of the polybutadiene and the polybutadiene content rate in the composition is generally set to 0.2-80 wt.%. The dispersions are preferably substances with the boiling point not less than 80 deg.C and not more than 350 deg.C under the normal pressure, and practically, organic liquid such as hydrocarbon, ketone, ester, amine, amide, sulfoxide, and sulfone can be used besides water.

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Inventors:

Atsuhiro Kanzaki
Koichiro Maeda
Yohisa Yamamoto

Application Number:

JP18793999A

Publication Date:

September 09, 2009

Filing Date:

July 01, 1999

Export Citation:

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Assignee:

Zeon Corporation

International Classes:

H01M4/62; C08L47/00; H01M4/13

Domestic Patent References:

JP4039862A
JP5101829A
JP11016580A

Foreign References:

EP0859418A1

Attorney, Agent or Firm:

Hitoshi Maeda
Toru Suzuki

Previous Patent: JPS4329168

Next Patent: PAPER FORM ALTERING APPARATUS IN NIP OUTPUT PROGRAM