Despite graphene's apparent potential for anti-corrosion coatings, it is cathodic to most metals and can promote corrosion at exposed graphene–metal interfaces. This may accelerate dangerous localized corrosion that can seriously weaken the coated metals.
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Acknowledgements
We thank Y.W. Chung and A.R. Koltonow for helpful discussions, F. Frankel for advice on Fig. 1, and the Office of Naval Research (ONRN000141612838) for support.
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Cui, C., Lim, A. & Huang, J. A cautionary note on graphene anti-corrosion coatings. Nature Nanotech 12, 834–835 (2017). https://doi.org/10.1038/nnano.2017.187
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DOI: https://doi.org/10.1038/nnano.2017.187
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