Depth distribution of alkali metal ions on supported graphene in the presence 
of water

Scardamaglia, Mattia; Bluhm, Hendrik; Nemšák, Slavomir; Shavorskiy, Andrey

doi:10.1016/j.elspec.2022.147281

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Depth distribution of alkali metal ions on supported graphene in the presence of water

MPS-Authors

/persons/resource/persons21376

Bluhm, Hendrik
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Scardamaglia, M., Bluhm, H., Nemšák, S., & Shavorskiy, A. (2023). Depth distribution of alkali metal ions on supported graphene in the presence of water. Journal of Electron Spectroscopy and Related Phenomena, 262(1): 147281. doi:10.1016/j.elspec.2022.147281.

Cite as: https://hdl.handle.net/21.11116/0000-000C-44DD-F

Abstract

The interaction of alkali ions with multilayer graphene is critical in many applications, for example in energy storage devices. This requires a detailed understanding of ion interactions with carbonaceous layers. The mechanism of ion intercalation into graphene can be different from that observed for hard graphite. In this paper, we present an investigation of the vertical alkali ion (Na, K, Cs) distribution on multilayer graphene deposited onto SiO₂ in vacuum and in the presence of water vapor using Standing Wave Ambient Pressure Photoemission Spectroscopy. It was found that Cs, K, and Na ions do not intercalate into multilayer graphene under vacuum conditions. The most likely reasons for this behavior are the reversibility of the process due to large inter-sheet spacing or lack of time for intercalation. When exposed to water vapor, Na ions intercalate soft carbon whereas Cs ions do not. This is a clear indication for the difference in the intercalation mechanisms on hard graphite and soft graphene.