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  Long-Term Passivation of Strongly Interacting Metals with Single-Layer Graphene

Weatherup, R. S., D’Arsié, L., Cabrero-Vilatela, A., Caneva, S., Blume, R., Robertson, J., et al. (2015). Long-Term Passivation of Strongly Interacting Metals with Single-Layer Graphene. Journal of the American Chemical Society, 137(45), 14358-14366. doi:10.1021/jacs.5b08729.

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ja5b08729 1..9 - jacs.pdf (Publisher version), 7MB
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ACS

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 Creators:
Weatherup, Robert S.1, 2, Author
D’Arsié, Lorenzo1, Author
Cabrero-Vilatela, Andrea1, Author
Caneva, Sabina1, Author
Blume, Raoul3, Author              
Robertson, John1, Author
Schlögl, Robert4, Author              
Hofmann, Stephan1, Author
Affiliations:
1Department of Engineering, University of Cambridge, Cambridge CB3 0FA, United Kingdom, ou_persistent22              
2Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States, ou_persistent22              
3Abt. Solarenergieforschung, Helmhotz-Zentrum Berlin, ou_persistent22              
4Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              

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 Abstract: The long-term (>18 months) protection of Ni surfaces against oxidation under atmospheric conditions is demonstrated by coverage with single-layer graphene, formed by chemical vapor deposition. In situ, depth-resolved X-ray photoelectron spectroscopy of various graphene-coated transition metals reveals that a strong graphene–metal interaction is of key importance in achieving this long-term protection. This strong interaction prevents the rapid intercalation of oxidizing species at the graphene–metal interface and thus suppresses oxidation of the substrate surface. Furthermore, the ability of the substrate to locally form a passivating oxide close to defects or damaged regions in the graphene overlayer is critical in plugging these defects and preventing oxidation from proceeding through the bulk of the substrate. We thus provide a clear rationale for understanding the extent to which two-dimensional materials can protect different substrates and highlight the key implications for applications of these materials as barrier layers to prevent oxidation.

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Language(s): eng - English
 Dates: 2015-08-172015-10-242015-11-18
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/jacs.5b08729
 Degree: -

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Project name : GRAFOL - GRAPHENE CHEMICAL VAPOUR DEPOSITION: ROLL TO ROLL TECHNOLOGY
Grant ID : 285275
Funding program : Funding Programme 7 (FP7)
Funding organization : European Commission (EC)

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Title: Journal of the American Chemical Society
  Other : J. Am. Chem. Soc.
  Abbreviation : JACS
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: 9 Volume / Issue: 137 (45) Sequence Number: - Start / End Page: 14358 - 14366 Identifier: ISSN: 0002-7863
CoNE: https://pure.mpg.de/cone/journals/resource/954925376870