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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 (Verlagsversion), 7MB
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2015
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ACS

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 Urheber:
Weatherup, Robert S.1, 2, Autor
D’Arsié, Lorenzo1, Autor
Cabrero-Vilatela, Andrea1, Autor
Caneva, Sabina1, Autor
Blume, Raoul3, Autor           
Robertson, John1, Autor
Schlögl, Robert4, Autor           
Hofmann, Stephan1, Autor
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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 Zusammenfassung: 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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Sprache(n): eng - English
 Datum: 2015-08-172015-10-242015-11-18
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1021/jacs.5b08729
 Art des Abschluß: -

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Projektname : GRAFOL - GRAPHENE CHEMICAL VAPOUR DEPOSITION: ROLL TO ROLL TECHNOLOGY
Grant ID : 285275
Förderprogramm : Funding Programme 7 (FP7)
Förderorganisation : European Commission (EC)

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Titel: Journal of the American Chemical Society
  Andere : J. Am. Chem. Soc.
  Kurztitel : JACS
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Washington, DC : American Chemical Society
Seiten: 9 Band / Heft: 137 (45) Artikelnummer: - Start- / Endseite: 14358 - 14366 Identifikator: ISSN: 0002-7863
CoNE: https://pure.mpg.de/cone/journals/resource/954925376870