▎ 摘　　要

NOVELTY - Quaternary composite superhydrophilic coating comprises modified nano-silica, graphene oxide, sulfonated carbon nanotubes, and polyoxometalate composition. USE - Used as a quaternary composite superhydrophilic coating. ADVANTAGE - The coating has a surface resistance of 106-10%9 Omega , a water contact angle of less than 5 degrees which does not change after washing 3000 times or after 10000 times of friction resistance, self-cleaning antistatic super-hydrophilic properties and anti-fog performance. The method is simple and environmental-friendly. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the coating, comprising modifying the nano silica aqueous solution by an aminosilane, mixing with aqueous solution of graphene oxide, aqueous solution of sulfonated carbon nanotubes, and aqueous solution of polyoxometallate, coating the mixed solution on the substrate after heat treatment at 60-200 degrees C.