Enhancing the Anticorrosion Performance of Graphene-Epoxy Coatings by Biomimetic Interfacial Designs

The high conductivity of graphene (G) results in G-based composite coatings with unacceptable corrosion-promotion activity (CPA), which greatly limits their applications in metal protection. Herein, a bioinspired graphene-epoxy (B-G-EP) coating with nacre-like structure is constructed to investigate the interfacial structure-dependent anticorrosion of coatings. The results demonstrate that the highly aligned structure of B-G-EP resolves the contradiction between the anticorrosion capability and CPA of G, which breaks the limitation of the blending rule and provides insight into the preparation of high-performance G-based coatings through biomimetic strategies.

Automated summary

The high conductivity of graphene leads to unacceptable corrosion-promotion activity in graphene-based composite coatings, limiting their applications in metal protection. A bioinspired graphene-epoxy coating with a highly aligned structure successfully resolves the contradiction between anticorrosion capability and corrosion-promotion activity, providing insights into preparing high-performance graphene-based coatings through biomimetic strategies.