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Interfaces in solid-state sodium-ion batteries: NaCoO 2 thin films on solid electrolyte substrates

Guhl, Conrad ; Kehne, Philipp ; Ma, Qianli ; Tietz, Frank ; Komissinskiy, Philipp ; Jaegermann, Wolfram ; Hausbrand, René :
Interfaces in solid-state sodium-ion batteries: NaCoO 2 thin films on solid electrolyte substrates.
[Online-Edition: https://doi.org/10.1016/j.electacta.2018.02.109]
In: Electrochimica Acta, 268 S. 226-233. ISSN 00134686
[Artikel] , (2018)

Offizielle URL: https://doi.org/10.1016/j.electacta.2018.02.109

Kurzbeschreibung (Abstract)

On the way to sodium-based all-solid-state batteries, interface analysis is a key issue. In this work, the interface between two typical solid sodium-ion conductors (Na-β″-Al2O3 and NASICON) and the layered oxide material NaCoO2 is investigated. The formation of the interface between the electrolyte material and the NaCoO2 coating is studied using an in-situ X-ray photoemission spectroscopy (XPS) surface science approach. Only a slight reduction of zirconium and scandium in NASICON was observed in proximity to the cathode side interface, while severe reactions, including the formation of a CaOAl2O3 mixed phase, were detected between Na-β″-Al2O3 and NaCoO2.

Typ des Eintrags: Artikel
Erschienen: 2018
Autor(en): Guhl, Conrad ; Kehne, Philipp ; Ma, Qianli ; Tietz, Frank ; Komissinskiy, Philipp ; Jaegermann, Wolfram ; Hausbrand, René
Titel: Interfaces in solid-state sodium-ion batteries: NaCoO 2 thin films on solid electrolyte substrates
Sprache: Englisch
Kurzbeschreibung (Abstract):

On the way to sodium-based all-solid-state batteries, interface analysis is a key issue. In this work, the interface between two typical solid sodium-ion conductors (Na-β″-Al2O3 and NASICON) and the layered oxide material NaCoO2 is investigated. The formation of the interface between the electrolyte material and the NaCoO2 coating is studied using an in-situ X-ray photoemission spectroscopy (XPS) surface science approach. Only a slight reduction of zirconium and scandium in NASICON was observed in proximity to the cathode side interface, while severe reactions, including the formation of a CaOAl2O3 mixed phase, were detected between Na-β″-Al2O3 and NaCoO2.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Electrochimica Acta
Band: 268
Verlag: Elsevier Science Publishing
Freie Schlagworte: All-solid-state battery, Interfaces, Sodium, NaCoO2, NASICON, β″-Al2O3
Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Dünne Schichten
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Oberflächenforschung
Profilbereiche
Profilbereiche > Thermo-Fluids & Interfaces
Hinterlegungsdatum: 05 Apr 2018 11:54
DOI: 10.1016/j.electacta.2018.02.109
Offizielle URL: https://doi.org/10.1016/j.electacta.2018.02.109
Sponsoren: This research project was funded by the DFG (HA 6128/2-1 and KO 4093/2-1)., Additionally, the authors would like to thank BMBF (03KP801) for funding the UHV system DAISY-BAT.
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