Title:
CARBON BLACK DISPERSION AND USE THEREOF
Document Type and Number:
Japanese Patent JP2014194001
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a carbon black dispersion using N-methyl-2-pyrrolidone as a solvent, which has lower viscosity and higher concentration and is more excellent in dispersibility and storage stability, compared to a conventional resin type dispersant; and to provide a battery electrode mixture layer which has homogeneous and good coating film properties and low surface resistance, and a lithium ion secondary battery provided with the same.SOLUTION: Provided is a carbon black dispersion comprising carbon black, a polyvinyl alcohol as a dispersant, and N-methyl-2-pyrrolidone as a solvent. A BET specific surface area of the carbon black is 30 to 1500 m/g, a saponification degree of the polyvinyl alcohol is 60 to 85 mol%, and an amount of the polyvinyl alcohol relative to 100 pts.wt. of the carbon black is more than 8 pts.wt. and 40 pts.wt. or less.
Inventors:
TAKAHASHI KOHEI
MAKI SHINICHIRO
HIROTA NAOHISA
TERASAWA MASAHIRO
MAKI SHINICHIRO
HIROTA NAOHISA
TERASAWA MASAHIRO
Application Number:
JP2014003158A
Publication Date:
October 09, 2014
Filing Date:
January 10, 2014
Export Citation:
Assignee:
TOYO INK SC HOLDINGS CO LTD
International Classes:
C09D17/00; H01M4/13; H01M4/139; H01M4/62
Domestic Patent References:
| JP2011184664A | 2011-09-22 | |||
| JP2011070908A | 2011-04-07 |
Foreign References:
| WO2011024799A1 | 2011-03-03 |
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