| abstract |
The invention provides an aqueous binder, which is water-soluble reinforced polyvinyl alcohol grafted with polyacrylic acid long-chain branches or copolymerization of acrylic monomers and olefin monomers and long-chain branches. The water-based binder improves the defects of easy peeling and air entrainment when the polyvinyl alcohol disperses the slurry, and the preparation method accurately introduces long branches, improves the cycle performance of the high-gram capacity silicon-based negative electrode, and significantly inhibits the pole piece. swell. |