Enhancing Graphene Protective Coatings by Hydrogen-Induced Chemical Bond Formation
- Chemical Sciences Division, Lawrence Berkeley National Lab, Berkeley, California 94720, United States
Increased interactions at the graphene–metal interface are here demonstrated to yield an effective prevention of intercalation of foreign species below the graphene cover. Hereby, an engineering pathway for increasing the usability of graphene as a metal coating is demonstrated. Graphene on Ir(111) (Gr/Ir(111)) is used as a model system, as it has previously been well-established that an increased interaction and formation of chemical bonds at the graphene–Ir interface can be induced by hydrogen functionalization of the graphene from its top side. With X-ray photoelectron spectroscopy, it is shown that hydrogen-induced increased interactions at the Gr/Ir(111) interface effectively prevents intercalation of CO in the millibar range. The scheme leads to protection against at least 10 times higher pressure and 70 times higher fluences of CO, compared to the protection offered by pristine Gr/Ir(111).
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); Danish Council for Independent Research; European Research Council (ERC)
- Grant/Contract Number:
- AC02-05CH11231; 0602-02566B; 0602-02265B; 648551; 11744
- OSTI ID:
- 1633834
- Alternate ID(s):
- OSTI ID: 1638187
- Journal Information:
- ACS Applied Nano Materials, Journal Name: ACS Applied Nano Materials Vol. 1 Journal Issue: 9; ISSN 2574-0970
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Similar Records
Pd overlayer on Oxygen pre-covered Graphene/Ru(0001): Thermal Stability
Excitation and characterization of image potential state electrons on quasi-free-standing graphene