Kehne, P. ; Guhl, C. ; Ma, Q. ; Tietz, F. ; Alff, L. ; Hausbrand, R. ; Komissinskiy, P. (2019)
Electrochemical Performance of All-Solid-State Sodium-Ion Model Cells with Crystalline NaxCoO2 Thin-Film Cathodes.
In: Journal of The Electrochemical Society, 166 (3)
doi: 10.1149/2.0491903jes
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
A common way to improve the electrochemical performance of the NaxCoO2 thin-film cathodes is to increase their crystallinity. Here we present our study of the electrochemical performance of all-solid-state sodium ion batteries with NaxCoO2 thin-film cathodes having two different degrees of crystallinity tuned by their post-deposition annealing at 700°C. The NaxCoO2 cathode thin-films were grown by pulsed laser deposition onto a bulk Na3.4Sc0.4Zr1.6(SiO4)2(PO4) (Nasicon) solid electrolyte substrates and assembled with sodium metal into a Swagelok battery cells. Cells with the low-crystalline NaxCoO2 cathodes show discharge capacities of up to 124 mAh g−1 over 800 charge/discharged cycles. However, cells with highly crystalline NaxCoO2 cathodes revealed a significant capacity loss down to 9 mAh g−1 and a pronounced increase of the overpotential from 100 to 890 mV during the 200 cycles. The observed loss in capacity can be attributed to a strong increase of the interface resistance between the highly crystalline annealed NaxCoO2 films and Nasicon during cycling.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2019 |
| Autor(en): | Kehne, P. ; Guhl, C. ; Ma, Q. ; Tietz, F. ; Alff, L. ; Hausbrand, R. ; Komissinskiy, P. |
| Art des Eintrags: | Bibliographie |
| Titel: | Electrochemical Performance of All-Solid-State Sodium-Ion Model Cells with Crystalline NaxCoO2 Thin-Film Cathodes |
| Sprache: | Englisch |
| Publikationsjahr: | 16 Januar 2019 |
| Verlag: | ECS - The Electrochemical Society |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of The Electrochemical Society |
| Jahrgang/Volume einer Zeitschrift: | 166 |
| (Heft-)Nummer: | 3 |
| DOI: | 10.1149/2.0491903jes |
| URL / URN: | https://doi.org/10.1149/2.0491903jes |
| Kurzbeschreibung (Abstract): | A common way to improve the electrochemical performance of the NaxCoO2 thin-film cathodes is to increase their crystallinity. Here we present our study of the electrochemical performance of all-solid-state sodium ion batteries with NaxCoO2 thin-film cathodes having two different degrees of crystallinity tuned by their post-deposition annealing at 700°C. The NaxCoO2 cathode thin-films were grown by pulsed laser deposition onto a bulk Na3.4Sc0.4Zr1.6(SiO4)2(PO4) (Nasicon) solid electrolyte substrates and assembled with sodium metal into a Swagelok battery cells. Cells with the low-crystalline NaxCoO2 cathodes show discharge capacities of up to 124 mAh g−1 over 800 charge/discharged cycles. However, cells with highly crystalline NaxCoO2 cathodes revealed a significant capacity loss down to 9 mAh g−1 and a pronounced increase of the overpotential from 100 to 890 mV during the 200 cycles. The observed loss in capacity can be attributed to a strong increase of the interface resistance between the highly crystalline annealed NaxCoO2 films and Nasicon during cycling. |
| Freie Schlagworte: | Batteries, Films, Solid-State Topics: General, sodium-ion, solid-state, thin-film |
| Zusätzliche Informationen: | This paper is part of the JES Focus Issue of Selected Papers from IMLB 2018. |
| 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 |
| Hinterlegungsdatum: | 23 Jan 2019 08:27 |
| Letzte Änderung: | 23 Jan 2019 08:27 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum