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Anticorrosive coatings are a type of coating widely used in modern industries, the energy sector, marine applications, etc. They prevent corrosion of the substrate through the shielding effect, corrosion-inhibiting action, and cathodic protection provided by the coating layer. Prasai et al. found that by coating the surface of nickel metal with multiple layers of graphene using chemical vapor deposition (CVD), its corrosion rate was 20 times slower than that of bare nickel. Therefore, graphene has potential for use in anti-corrosion coatings. However, due to its high surface area, strong van der Waals forces, and π - π bonding, graphene tends to aggregate; thus, to develop high-performance graphene/organic anti-corrosion coatings, it is necessary to first overcome this aggregation problem and improve the dispersion of graphene within the polymers. Wang Yaowen prepared graphene by reducing oxidized graphene, dispersed it uniformly in epoxy resin through ultrasonic treatment, and investigated the anti-corrosion performance of the graphene-coated material using polarization curve methods. Studies show that the self-corrosion current of the graphene-coated material is much lower than that of pure epoxy resin, and its self-corrosion voltage is higher as well; thus, its anti-corrosion performance is significantly better than that of pure epoxy resin. When the graphene content is 1%, the anti-corrosion performance of the graphene-based anti-corrosion coating reaches its optimum level. Studies have shown that modifying graphene can enable it to disperse more effectively in polymers. Li et al. modified graphene using a titanate coupling agent to enable its uniform dispersion in polyurethane coatings. Studies have shown that when the graphene content reaches 0.4%, it can arrange itself in a layered structure parallel to the surface of the metal substrate, thereby protecting the substrate and reducing the penetration of corrosive agents, and this improves the corrosion resistance of the water-based polyurethane coating. Chang et al. prepared carboxymethylated graphene and investigated the effect of the carboxyl group content in graphene on the corrosion resistance of polymethyl methacrylate resin/graphene coatings. Experiments have shown that the higher the content of carboxyl groups in graphene, the better the anti-corrosion performance of the coating. This is because the carboxyl groups in graphene can reduce its agglomeration, allowing graphene to be dispersed more uniformly within the coating and thus enhancing its shielding effect. Uniformly dispersed graphene can form a physical barrier layer within the coating, serving as a shielding mechanism. Adding it to epoxy zinc-rich paint creates a networked conductive structure within the coating, improving the utilization rate of zinc powder and enhancing its cathodic protection effect on steel sheets, thereby providing better protection. Tian Zhenyu et al. studied the application of graphene in heavy-duty anti-corrosion coatings. Studies have shown that the addition of graphene significantly improves the utilization rate of zinc in epoxy zinc-rich paints, providing effective cathodic protection; this leads to a substantial reduction in the amount of zinc powder required, as well as less dust pollution during application. When the graphene content is 1%, the anti-corrosion performance of the zinc-graphene composite coating decreases. This is mainly because an excessive amount of graphene leads to its agglomeration, which reduces the shielding effect of graphene; as a result, corrosive agents can more easily reach the metal substrate, thereby lowering the coating’s anti-corrosion capabilities.