Guhl, Conrad ; Kehne, Philipp ; Ma, Qianli ; Tietz, Frank ; Alff, Lambert ; Komissinskiy, Philipp ; Jaegermann, Wolfram ; Hausbrand, René (2018)
In-operando photoelectron spectroscopy for batteries: Set-up using pristine thin film cathode and first results on NaxCoO2.
In: Review of Scientific Instruments, 89 (7)
doi: 10.1063/1.5022616
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
A model all-solid-state battery cell with a thin film NaxCoO2 cathode was assembled under ultra-high vacuum conditions and cycled inside the vacuum chamber, using a dedicated sample holder. We present in-operando x-ray photoelectron spectroscopy measurements of a NaxCoO2 cathode at different charging states. During battery operation, the change in sodium content, the change in cobalt oxidation state, and the evolution of the O1s and VB emissions could be monitored. Comparison with a conventional post-mortem analysis technique showed that the new measurement technique produces comparable results regarding the oxidation state of the transition metal, but sodium and oxygen results show differences due to cathode/electrolyte interfacial reactions for conventional analysis. By using surface layer-free samples in the presented techniques, we could circumvent such reactions and obtain reliable spectra for the pure bulk-like active cathode material.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2018 |
| Autor(en): | Guhl, Conrad ; Kehne, Philipp ; Ma, Qianli ; Tietz, Frank ; Alff, Lambert ; Komissinskiy, Philipp ; Jaegermann, Wolfram ; Hausbrand, René |
| Art des Eintrags: | Bibliographie |
| Titel: | In-operando photoelectron spectroscopy for batteries: Set-up using pristine thin film cathode and first results on NaxCoO2 |
| Sprache: | Englisch |
| Publikationsjahr: | Juli 2018 |
| Verlag: | AMER INST PHYSICS, 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Review of Scientific Instruments |
| Jahrgang/Volume einer Zeitschrift: | 89 |
| (Heft-)Nummer: | 7 |
| DOI: | 10.1063/1.5022616 |
| URL / URN: | https://doi.org/10.1063/1.5022616 |
| Kurzbeschreibung (Abstract): | A model all-solid-state battery cell with a thin film NaxCoO2 cathode was assembled under ultra-high vacuum conditions and cycled inside the vacuum chamber, using a dedicated sample holder. We present in-operando x-ray photoelectron spectroscopy measurements of a NaxCoO2 cathode at different charging states. During battery operation, the change in sodium content, the change in cobalt oxidation state, and the evolution of the O1s and VB emissions could be monitored. Comparison with a conventional post-mortem analysis technique showed that the new measurement technique produces comparable results regarding the oxidation state of the transition metal, but sodium and oxygen results show differences due to cathode/electrolyte interfacial reactions for conventional analysis. By using surface layer-free samples in the presented techniques, we could circumvent such reactions and obtain reliable spectra for the pure bulk-like active cathode material. |
| 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: | 03 Sep 2018 11:23 |
| Letzte Änderung: | 17 Jan 2019 10:36 |
| PPN: | |
| Sponsoren: | This research project was funded by the DFG (Nos. HA 6128/2-1 and KO 4093/2-1)., Additionally, the authors would like to thank BMBF (No. 03KP801) for funding the UHV system DAISY-BAT. |
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