| 摘要 |
The invention relates to a polymer composition P containing: 100 parts-by-weight of polymer 1, which polymer is at least 50 g/l water-soluble at 25° C. and 1 bar, and can be produced via radical-initiated polymerisation of more than 95 wt. % of monomers from the group of acrylic acid, methylacrilic acid, or the esters thereof, acrylonitrile and vinylester, and, optionally, via subsequent alkaline hydrolysis; 10 to 200 parts-by-weight of polymer 2, which polymer is at least 10 g/l water-soluble at 25° C. and 1 bar, has a viscosity of a 1 wt. % aqueous solution at 25° C. and 1 bar at a shear rate of 10/s>1.0 Pas, and at a shear rate of 120/s<0.7 Pas, from the group of polysaccharides, celluloses or the carboxymethyl-, methyl-, hydroxyethyl- or hydroxypropyl derivatives thereof; and 20 to 300 parts-by-weight of polymer 3, which polymer is at least 10 g/l water-soluble at 25° C. and 1 bar, and can be produced via radical-initiated polymerisation of more than 30-95 wt. % of monomer A, from monomers from the group of acrylates or vinyl acetates, and 5-70 wt. % of monomer B of general formula R—CH═CH2, wherein R represents hydrogen, methyl, ethyl, propyl, isopropyl, phenyl or o-tolyl, and optionally, via subsequent alkaline hydrolysis. The invention also relates to: an electrode coating for a lithium-ion battery, containing the polymer composition P; a lithium-ion battery containing the polymer composition P; and the use of the polymer composition P as a binder system for the anode of a lithium-ion battery. |
