Patent ID: 9583768
Date: 2017-02-28
CPC Classifications: H01M,Y02E

Claim:
1. A negative electrode slurry composition comprising a binder resin, a water-soluble polymer, and a negative electrode active material, wherein the binder resin comprising (A) a styrene-butadiene copolymer latex having a gel amount of 70 to 98% and a glass transition temperature of −30° C. to 60° C. in dynamic viscoelasticity measurement and (B) an acryl polymer latex having a gel amount of 70 to 98% and a glass transition temperature of −100° C. to 0° C. in dynamic viscoelasticity measurement, the negative electrode slurry composition comprises 0.1 to 30 parts by mass of the (B) acryl polymer latex in terms of a solid content based on 100 parts by mass of the (A) styrene-butadiene copolymer latex in terms of a solid content, and the negative electrode active material comprising a carbon-based active material and a silicon-based active material.