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Ding, Feng
IBS - Center for Multidimensional Carbon Materials (CMCM)
Research Interests
  • Theoretical methods development for materials studies.

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Greatly Enhanced Anticorrosion of Cu by Commensurate Graphene Coating

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Title
Greatly Enhanced Anticorrosion of Cu by Commensurate Graphene Coating
Author
Xu, XiaozhiYi, DingWang, ZhichangYu, JiachenZhang, ZhihongQiao, RuixiSun, ZhanghaoHu, ZonghaiGao, PengPeng, HailinLiu, ZhongfanYu, DapengWang, EngeJiang, YingDing, FengLiu, Kaihui
Issue Date
201802
Publisher
WILEY-V C H VERLAG GMBH
Citation
ADVANCED MATERIALS, v.30, no.6, pp.1702944 -
Abstract
Metal corrosion is a long-lasting problem in history and ultrahigh anticorrosion is one ultimate pursuit in the metal-related industry. Graphene, in principle, can be a revolutionary material for anticorrosion due to its excellent impermeability to any molecule or ion (except for protons). However, in real applications, it is found that the metallic graphene forms an electrochemical circuit with the protected metals to accelerate the corrosion once the corrosive fluids leaks into the interface. Therefore, whether graphene can be used as an excellent anticorrosion material is under intense debate now. Here, graphene-coated Cu is employed to investigate the facet-dependent anticorrosion of metals. It is demonstrated that as-grown graphene can protect Cu(111) surface from oxidation in humid air lasting for more than 2.5 years, in sharp contrast with the accelerated oxidation of graphene-coated Cu(100) surface. Further atomic-scale characterization and ab initio calculations reveal that the strong interfacial coupling of the commensurate graphene/Cu(111) prevents H2O diffusion into the graphene/Cu(111) interface, but the one-dimensional wrinkles formed in the incommensurate graphene on Cu(100) can facilitate the H2O diffusion at the interface. This study resolves the contradiction on the anticorrosion capacity of graphene and opens a new opportunity for ultrahigh metal anticorrosion through commensurate graphene coating.
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DOI
http://dx.doi.org/10.1002/adma.201702944
ISSN
0935-9648
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