Research Article

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2019, 12(1): 19–23

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https://doi.org/10.1007/s12274-018-2056-2

Solution-processed highly adhesive graphene coatings for corrosion inhibition of metals

Gi-Cheol Son1,§, Deuk-Kyu Hwang3,§, Jaewon Jang1, Sang-Soo Chee1, Kyusang Cho1, Jae-Min Myoung3 (*), and Moon-Ho Ham1,2 (*)

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1 School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
2 Research Institute for Solar and Sustainable Energies, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
3 Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
§ Gi-Cheol Son and Deuk-Kyu Hwang contributed equally to this work.

Keywords: graphene, metal, surface coating, corrosion, solution process
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ABSTRACT The corrosion of metals can be induced by different environmental and operational conditions, and protecting metals from corrosion is a serious concern in many applications. The development of new materials and/or technologies to improve the efficiency of anti-corrosion coatings has attracted renewed interest. In this study, we develop a protective coating composed of a bilayer structure of reduced graphene oxide (RGO)/graphene oxide (GO) applied to Cu plates by spray-coating and subsequent annealing. The annealing of the GO/Cu plates at 120 °C produces a bilayer structure of RGO/GO by the partial reduction of the spray-coated GO layer. This induces superior corrosion resistance and adhesion strength compared to those of GO/Cu and RGO/Cu plates because of the hydrophobic nature of the RGO surface exposed to the surroundings and the formation of Cu–O bonds with the O-based functional groups of GO. This approach provides a viable and scalable route for using graphene coatings to protect metal surfaces from corrosion.
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Solution-processed highly adhesive graphene coatings for corrosion inhibition of metals. Nano Res. 2019, 12(1): 19–23 https://doi.org/10.1007/s12274-018-2056-2

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