Rear earth polyoxometallate silanization process for metal cathode before electrophoresis

The invention discloses a rare earth polyoxometallate silanization process before metal cathode electrophoresis. By adopting a rare earth silanization treatment technique before cathode electrophoresis, namely the successful combination of polyoxometallate synthetic technique and silanization technique, the synthesized silicon molybdenum heteropolyacid rare earth lanthanite salt is hybridized with silane, and then a silane---silicon molybdenum heteropolyacid rare earth lanthanite hybridization film is formed on a metal surface. The hybridization film obtained in the process has the advantages of strong corrosion resistance, compactness and uniformity, low resistance, good adhesion, good self-repairing performance and the like.