Coating composition, lithium battery ternary positive electrode material sieving screen mesh and preparation method of lithium battery ternary positive electrode material sieving screen mesh

The invention discloses a coating composition, a lithium battery ternary positive electrode material sieving screen mesh and a preparation method of the lithium battery ternary positive electrode material sieving screen mesh, and the coating composition comprises the following components in percentage by mass: 30-45% of ZrO2; 30% to 45% of LiAlO2; 25%-20% of TiO; 5%-20% of MgO; and 2%-15% of SiO2. The coating provided by the invention can reduce the friction between the lithium battery ternary positive electrode material and a stainless steel screen mesh wire in the screening process, so that the mixing of strong magnetic metals such as Ni and Cr in the original screen mesh material is effectively controlled, the content of magnetic foreign matters in the ternary positive electrode material is reduced, and the cycling stability and the safety performance of a product are improved. And meanwhile, the formed screen coating can effectively isolate alkaline erosion of the lithium battery ternary positive electrod