Initial Stages of Sodium Deposition onto Au (111) from (MPPip)(TFSI): An In‐Situ STM Study for Sodium‐Ion Battery Electrolytes

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Abstract: Sodium‐ion batteries are promising candidates for post‐lithium‐ion batteries. While sodium has a less negative standard electrode potential compared to lithium, it is still a strong reducing agent. Ionic liquids are suitable solvents for sodium metal batteries, since metallic sodium is very reactive, particularly with water and molecules containing acidic hydrogen atoms. In this study, the initial stages of electrodeposition of sodium on Au (111) from N‐methyl‐N‐propylpiperidinium [MPPip] bis (trifluoromethanesulfonyl) imide [TFSI] were studied using voltammetry and in‐situ scanning tunnelling microscopy. Four subsequent underpotential deposition stages were observed: (i) nucleation at the Au (111) reconstruction elbows, followed by (ii) growth of small monoatomically high islands that form (iii) a smooth layer via coalescence, and (iv) further island growth on top of the existing layers. The electrocrystallisation mode changed from smooth layer formation to 3D growth, resulting in cauliflower‐like structures. The deposition process was accompanied by simultaneous alloy formation.

Location: Deutsche Nationalbibliothek Frankfurt am Main

Extent: Online-Ressource

Language: Englisch

Bibliographic citation: Initial Stages of Sodium Deposition onto Au (111) from (MPPip)(TFSI): An In‐Situ STM Study for Sodium‐Ion Battery Electrolytes ; day:25 ; month:08 ; year:2022 ; extent:1
ChemElectroChem ; (25.08.2022) (gesamt 1)

Creator: Heubach, Maren‐Kathrin
Schuett, Fabian M.
Kibler, Ludwig A.
Abdelrahman, Areeg
Jacob, Timo

DOI: 10.1002/celc.202200722

URN: urn:nbn:de:101:1-2022082515243421017308

Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.

Last update: 15.08.2025, 7:20 AM CEST

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Heubach, Maren‐Kathrin
Schuett, Fabian M.
Kibler, Ludwig A.
Abdelrahman, Areeg
Jacob, Timo

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Initial Stages of Sodium Deposition onto Au (111) from (MPPip)(TFSI): An In‐Situ STM Study for Sodium‐Ion Battery Electrolytes

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Other Objects (12)

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Understanding the Nitrogen Reduction Reaction Mechanism on CuFeO 2 Photocathodes

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Beschreibung von Oberflächenphänomenen durch relativistische Clusterrechnungen unter Verwendung eines Einbettungsverfahrens

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Entropic Contributions to Sodium Solvation and Solvent Stabilization upon Electrochemical Sodium Deposition from Diglyme and Propylene Carbonate Electrolytes

Understanding the Nitrogen Reduction Reaction Mechanism on CuFeO 2 Photocathodes

Capturing polysulfides by sulfurized‐polyacrylonitrile in lithium‐sulfur batteries and the sulfur‐chain effects through Density Functional Theory

Entropic contributions to sodium solvation and solvent stabilization upon electrochemical sodium deposition from diglyme and propylene carbonate electrolytes

Density functional theory studies on sulfur−polyacrylonitrile as a cathode host material for lithium−sulfur batteries

Valence energy correction for electron reactive force field

Elucidating active sites and decomposition mechanisms for oxythiomolybdate clusters (Mo 2 O 2 S x , x = 6;8) as catalyzers for hydrogen evolution reactions

Capturing polysulfides by sulfurized-polyacrylonitrile in lithium-sulfur batteries and the sulfur-chain effects through density functional theory

Effect of Alkali Metal Cations and Trace Metal Impurities on Cathodic Corrosion of Gold Electrode Surfaces

Potential‐Dependent Pt (111)/Water Interface: Tackling the Challenge of a Consistent Treatment of Electrochemical Interfaces **

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