▎ 摘　　要

NOVELTY - Lithium-ion battery sizing agent comprises porous carboxylated graphene oxide, porous lithium aluminum silicate nanoparticles, binder and deionized water, where the binder is polyacrylic acid with molecular formula (C3H4O2)n. Where n is an integer from 45-65. USE - Sizing agent for lithium ion battery film of lithium ion battery (claimed). ADVANTAGE - The lithium ion battery sizing agent enhances the membrane strength and heating and fusing performance, at the same time, providing a lithium ion transfer channel and can supplement lithium electrolyte solution. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparation of lithium-ion battery sizing agent comprising: (S1) dispersing porous carboxylated graphene oxide in the solvent to obtain the dispersion I; (S2) adding the binder in dispersion liquid I, fully dissolving to obtain the dispersion liquid II; (S3) adding lithium aluminum silicate nano-particles into the dispersion liquid II, and dispersing uniformly to obtain the lithium ion battery sizing agent; (2) lithium ion battery film, comprising a base film and a coating layer located on at least one of the surface film, where the coating layer is obtained by drying the sizing agent; and (3) preparation method of lithium ion battery film comprising coating the sizing agent on at least one of surface base film, dry processing for 2-3 hours at 70-90 degrees Celsius to obtain the product. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the lithium ion battery film. (Drawing includes non-English language text).