Journal
CARBON
Volume 132, Issue -, Pages 78-84Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2018.02.035
Keywords
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Funding
- Strategic Danish Research collaboration (DSF) with the DA-GATE project [12-131827]
- high technology foundation (HTF) with the NIAGRA project [058-2012-4]
- Danish National Research Foundation, Center for Nanostructured Graphene [DNRF103]
- EU Graphene Flagship [604391]
- European Union's Horizon research and innovation program under the Marie Sklodowska-Curie grant [658327]
- EU Horizon and innovation program [696656]
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Despite numerous reports regarding the potential of graphene for corrosion protection, examples of chemical vapor deposited (CVD) graphene-based anticorrosive coatings able to provide long-term protection (i.e. several months) of metals have so far been absent. Here, we present a polymer- graphene hybrid coating, comprising two single layers of CVD graphene sandwiched by three layers of polyvinyl butyral, which provides complete corrosion protection of commercial aluminum alloys even after 120 days of exposure to simulated seawater. The essential role played by graphene in the hybrid coating is evident when we compare the results from a polymer- only coating of the same thickness, which fails in protecting the metal after less than 30 days. With the emergence of commercially available large-area CVD graphene, our work demonstrates a straightforward approach towards high-performance anticorrosive coatings, which can be extended to other two-dimensional materials and polymers, for long-term protection of various relevant metals and alloys. (C) 2018 Elsevier Ltd. All rights reserved.
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