US 11,658,302 B2
Conductive carbon material dispersing agent for lithium ion battery, slurry for lithium ion battery electrode, electrode for lithium ion battery, and lithium ion battery
Shinji Ozaki, Osaka (JP); Katsuhiko Ikeyatsu, Osaka (JP); Katsuya Okubo, Osaka (JP); Satoru Aoyama, Osaka (JP); Naoki Sasagawa, Osaka (JP); and Hideki Goda, Osaka (JP)
Assigned to ARAKAWA CHEMICAL INDUSTRIES, LTD., Osaka (JP)
Filed by ARAKAWA CHEMICAL INDUSTRIES, LTD., Osaka (JP)
Filed on Nov. 12, 2020, as Appl. No. 17/95,750.
Claims priority of application No. JP2019-206714 (JP), filed on Nov. 15, 2019.
Prior Publication US 2021/0151766 A1, May 20, 2021
Int. Cl. H01M 4/62 (2006.01); C08L 1/28 (2006.01); C08L 9/06 (2006.01); C08L 33/08 (2006.01); C08L 77/06 (2006.01); H01M 4/13 (2010.01); H01M 10/0525 (2010.01)
CPC H01M 4/625 (2013.01) [C08L 1/286 (2013.01); C08L 9/06 (2013.01); C08L 33/08 (2013.01); C08L 77/06 (2013.01); H01M 4/13 (2013.01); H01M 10/0525 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01)] 6 Claims
 
1. A conductive carbon material dispersing agent for a lithium ion battery, comprising
a water-soluble poly(meth)acrylamide (A-1) which contains 2 to 60 mol % of structural units derived from a (meth)acrylamide group-containing compound (a) and 10 to 70 mol % of structural units derived from an unsaturated sulfonic acid or salts thereof (b), and which has a weight average molecular weight of 10,000 to 250,000.