The invention discloses a multilevel structure carbon material, a
photocathode anticorrosive
coating added with the multilevel structure carbon material and a corresponding preparation method. Firstly, a three-dimensional flower-shaped conductive carbon material with
high conductivity and high specific area is synthesized through a soft template and a high-temperature
carbonization method, then zero-dimensional
graphene quantum dots are synthesized in situ on a two-dimensional
petal-shaped carbon plate through a hydrothermal method, and a multilevel structure carbon material is formed. And then preparing an anticorrosive
coating by taking a
photocathode anticorrosive
coating added with the multilevel structure carbon material as a
surface coating and taking a
graphene /
zinc powder coating as a prime coating. And a layer of
photocathode is added for protection, so that the anti-
corrosion performance of the coating is integrally improved. Photo-induced electrons generated by the photocathode coating can be migrated to the
metal surface through
graphene, the
corrosion potential of
metal is reduced to achieve the anti-
corrosion effect, and due to the fact that a large number of electrons are generated under the driving of light, even if the coating is locally damaged, compared with the
metal electron loss corrosion trend, the
electron protection trend still has the
advantage.