| abstract |
The invention relates to the technical field of lithium-ion battery current collectors, and discloses a carbon-coated aluminum foil for lithium-ion batteries. The conductive coating of the carbon-coated aluminum foil includes a conductive agent, a binder and a solvent, and the conductive agent includes graphene and carbon black. , at least one of carbon nanotubes and layered conductive graphite, the binder includes at least one of polyacrylate, polyurethane, epoxy resin, polyacrylonitrile, styrene-butadiene rubber, sodium carboxymethyl cellulose, solvent At least one of water and absolute ethanol is included, and carbon black and graphene are graft-modified with polyvinylpyrrolidone. The invention adopts graphene as the conductive agent, which can make the conductive coating have higher thermal conductivity and improve the heat dissipation performance of the battery; the polyvinylpyrrolidone is grafted on the surface of the conductive agent to reduce the surface free energy of the conductive agent and increase the space The steric hindrance makes the graft-modified conductive agent have high dispersion stability. |