Patent ID: 9203091
Filing Date: 2015-12-01
Classification: C08F,C08L,H01M,Y02E,Y02P

Abstract:
1. A slurry for a negative electrode of a secondary battery, comprising an electrode active material, a water-insoluble polymer (A), and a water-soluble polymer (B), wherein: the water-insoluble polymer (A) contains 20 wt % to 60 wt % of an aliphatic conjugated diene monomer unit (a1), 0.5 wt % to 10 wt % of an ethylenically unsaturated carboxylic acid monomer unit (a2), and 30 wt % to 79.5 wt % of a unit (a3) of a monomer that is copolymerizable with the aliphatic conjugated diene monomer and the ethylenically unsaturated carboxylic acid monomer, the water-soluble polymer (B) contains 20 wt % to 60 wt % of an ethylenically unsaturated carboxylic acid monomer unit (b1), 25 wt % to 78 wt % of a (meth)acrylic acid ester monomer unit (b2), and 2 wt % to 15 wt % of a unit (b3) of a sulfonic acid group-containing monomer that is copolymerizable with the ethylenically unsaturated carboxylic acid monomer and the (meth)acrylic acid ester monomer, and a ratio (A)/(B) in parts by weight of the water-insoluble polymer (A) relative to the water-soluble polymer (B) is 80/20 to 95/5.