Two-dimensional reduced graphene oxide/polypyrrloe-based coating enable superior corrosion protection and photothermal-induced in-situ internal environmental regulation

•Two dimensional rGO/PPy nanosheets are fabricated by in-situ epitaxial polymerization.•The rGOPPO coating is obtained by the self-assembly and in-situ crosslinking.•Anti-corrosion efficiency can reach 99.9% both in neutral and oxidizing environments.•The redox activity of PPy enables excellent anti-corrosion properties.•In-situ heat adjustment of the internal environment is realized in metal containers.