X-ray photoelectron study of electrical double layer at graphene/phosphoric acid interface Full article
| Journal |
Applied Surface Science
ISSN: 1873-5584 , E-ISSN: 0169-4332 |
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| Output data | Year: 2020, Volume: 515, Article number : 146007, Pages count : 7 DOI: 10.1016/j.apsusc.2020.146007 | ||||||
| Tags | Graphene; Fluorinated graphene; Phosphoric acid; Electrical double layer; X-ray photoelectron spectroscopy | ||||||
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Abstract:
Here, we use in situ X-ray photoelectron spectroscopy (XPS) to investigate electrochemical processes at the graphene surface. As a model system, we design a sandwich-type electrochemical cell consisting of working graphene electrode separated from back by a fluorinated graphene (FG) film impregnated with a phosphoric acid electrolyte. Migration of the ions to the graphene electrode under applied potential causes a change of the observed concentration of carbon and phosphorus in the electrochemical cell as compared to the non-charged state. This fact allows revealing the process of electrical double layer formation at the graphene/FG-separator interface. The observed changes in the binding energies of elements composing electrolyte and graphene electrode are related with a shift of the Fermi level due to the charge transfer from the adsorbed ions.
Cite:
Sysoev V.I.
, Okotrub A.V.
, Arkhipov V.E.
, Smirnov D.A.
, Bulusheva L.G.
X-ray photoelectron study of electrical double layer at graphene/phosphoric acid interface
Applied Surface Science. 2020. V.515. 146007 :1-7. DOI: 10.1016/j.apsusc.2020.146007 WOS Scopus РИНЦ OpenAlex
X-ray photoelectron study of electrical double layer at graphene/phosphoric acid interface
Applied Surface Science. 2020. V.515. 146007 :1-7. DOI: 10.1016/j.apsusc.2020.146007 WOS Scopus РИНЦ OpenAlex
Identifiers:
| Web of science: | WOS:000525637300108 |
| Scopus: | 2-s2.0-85081697987 |
| Elibrary: | 43251643 |
| OpenAlex: | W3009685230 |