Pfanzelt, M. ; Kubiak, P. ; Jacke, S. ; Dimesso, L. ; Jaegermann, W. ; Wohlfahrt-Mehrens, M. (2012)
SEI Formation on TiO2 Rutile.
In: Journal of The Electrochemical Society, 159 (6)
doi: 10.1149/2.085206jes
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
X-ray photoelectron spectroscopy (XPS) and symmetric electrochemical impedance spectroscopy (EIS) are carried out to identify and determine the nature of the solid electrolyte interface (SEI) formation on TiO2 rutile anodes in lithium ion batteries. The recorded XPS spectra (O1s, C1s, P2p and Li1s and Ti2p) evidence an SEI layer formation at 0.8 V vs. Li/Li+ in a TiO2/Li cell with a lithium reference and an organic electrolyte (LiPF6 in EC : DMC (1 : 1 by wt%)). When the cell is discharged down to 0.1 V, the SEI mainly consists of ether and carbonyl groups and some alcohol or alkoxide groups. Upon charge the SEI additionally evidences some carboxylic groups. EIS measurements exhibit an additional RQ element at 0.8 V, supporting the formation of the SEI at this potential. The EIS evaluation shows that the SEI is mainly formed in the first cycle but evolves further on in the following cycles.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2012 |
| Autor(en): | Pfanzelt, M. ; Kubiak, P. ; Jacke, S. ; Dimesso, L. ; Jaegermann, W. ; Wohlfahrt-Mehrens, M. |
| Art des Eintrags: | Bibliographie |
| Titel: | SEI Formation on TiO2 Rutile |
| Sprache: | Englisch |
| Publikationsjahr: | 10 April 2012 |
| Verlag: | The Electrochemical Society |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of The Electrochemical Society |
| Jahrgang/Volume einer Zeitschrift: | 159 |
| (Heft-)Nummer: | 6 |
| DOI: | 10.1149/2.085206jes |
| Kurzbeschreibung (Abstract): | X-ray photoelectron spectroscopy (XPS) and symmetric electrochemical impedance spectroscopy (EIS) are carried out to identify and determine the nature of the solid electrolyte interface (SEI) formation on TiO2 rutile anodes in lithium ion batteries. The recorded XPS spectra (O1s, C1s, P2p and Li1s and Ti2p) evidence an SEI layer formation at 0.8 V vs. Li/Li+ in a TiO2/Li cell with a lithium reference and an organic electrolyte (LiPF6 in EC : DMC (1 : 1 by wt%)). When the cell is discharged down to 0.1 V, the SEI mainly consists of ether and carbonyl groups and some alcohol or alkoxide groups. Upon charge the SEI additionally evidences some carboxylic groups. EIS measurements exhibit an additional RQ element at 0.8 V, supporting the formation of the SEI at this potential. The EIS evaluation shows that the SEI is mainly formed in the first cycle but evolves further on in the following cycles. |
| Zusätzliche Informationen: | This was Paper 607 presented at the Montreal, QC, Canada, Meeting of the Society, May 1–6, 2011. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Oberflächenforschung 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 25 Nov 2013 09:51 |
| Letzte Änderung: | 26 Mär 2015 20:49 |
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