| abstract |
The invention discloses a lithium ion battery separator with charging protection function and a preparation method thereof. The lithium ion battery separator comprises a base film, a positive electrode coating coated on the side of the base film corresponding to the positive electrode, and a positive electrode coating coated on the side of the base film corresponding to the negative electrode. A negative electrode coating, wherein the raw materials for forming the positive coating include: organic solvent, a binder and a polyamide; the raw materials for forming the negative coating include: inorganic particles, a binder, a molten flame retardant, a dispersant and an organic solvent; The molten flame retardant is tetrabromobisphenol A bis(allyl) ether, tetrabromobisphenol A bis(2-hydroxyethyl) ether or tetrabromobisphenol A bis(2,3-dibromopropyl) ether . In the invention, the positive electrode is coated with an anti-oxidative polymer slurry to solve the strong oxidizing effect on the separator caused by the collapse of the positive electrode structure. |