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다차원 탄소재료 연구단
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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(s)
Xiaozhi Xu; Ding Yi; Zhichang Wang; Jiachen Yu; Zhihong Zhang; Ruixi Qiao; Zhanghao Sun; Zonghai Hu; Peng Gao; Hailin Peng; Zhongfan Liu; Dapeng Yu; Enge Wang; Ying Jiang; Feng Ding; Kaihui Liu
Publication Date
2018-02
Journal
ADVANCED MATERIALS, v.30, no.6, pp.1702944 -
Publisher
WILEY-V C H VERLAG GMBH
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. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinhei
URI
https://pr.ibs.re.kr/handle/8788114/5462
ISSN
0935-9648
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > Journal Papers (저널논문)
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2. Xu_et_al-2018-Advanced_Materials.pdfDownload

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