▎ 摘　　要

NOVELTY - High stable modified manganese dioxide catalyst anode comprises a conductive substrate, a corrosion-resistant conductive layer, a modified manganese dioxide catalyst layer and a silica gel coating, which is sequentially connected by bottom to top, where the modified manganese dioxide catalyst layer comprises fluorine and metal co-doped nano manganese dioxide and carbon material, where the metal is niobium, bismuth, tin, cerium, lanthanum, cobalt, silver, nickel, platinum, tantalum, ruthenium, iridium, antimony, and carbon material comprises a graphene and/or a carbon nanotube. USE - Used as high stable modified manganese dioxide catalyst anode. ADVANTAGE - The anode: has good stability, high current efficiency, long service life. The method: is simple to operate, mild reaction condition, good for mass production, and is economical. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the highly stable modified manganese dioxide catalyst anode, comprising (i) performing surface cleaning pretreatment on the conductive substrate; (ii) generating a corrosion-resistant conductive layer on the surface of the conductive substrate after surface cleaning and pretreatment; (iii) uniformly mixing manganese salt solution with carbon material, fluorine source and the metal salt solution to obtain a mixed slurry, coating the mixed slurry on the surface of the corrosion-resistant conductive layer, drying, calcining, and repeating coating, drying and calcining for many times to generate a modified manganese dioxide catalyst layer on the surface of the corrosion-resistant conductive layer; and (iv) coating the silica sol on the surface of the modified manganese dioxide catalyst layer, drying, calcining, and repeatedly coating, drying and calcining for many times to form a silica gel coating on the surface of the modified manganese dioxide catalyst layer.