SEI formation on TiO 2 rutile

M. Pfanzelt, P. Kubiak, S. Jacke, L. Dimesso, W. Jaegermann, M. Wohlfahrt-Mehrens

Research output: Contribution to journalArticle

21 Citations (Scopus)

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 TiO 2 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. LiLi + in a TiO 2Li cell with a lithium reference and an organic electrolyte (LiPF 6 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.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume159
Issue number6
DOIs
Publication statusPublished - 2012
Externally publishedYes

Fingerprint

Solid electrolytes
solid electrolytes
rutile
Electrochemical impedance spectroscopy
impedance
X ray photoelectron spectroscopy
lithium
photoelectron spectroscopy
spectroscopy
cycles
alkoxides
cells
Lithium
Ether
Electrolytes
electric batteries
titanium dioxide
Ethers
ethers
Anodes

ASJC Scopus subject areas

  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics

Cite this

Pfanzelt, M., Kubiak, P., Jacke, S., Dimesso, L., Jaegermann, W., & Wohlfahrt-Mehrens, M. (2012). SEI formation on TiO 2 rutile. Journal of the Electrochemical Society, 159(6). https://doi.org/10.1149/2.085206jes

SEI formation on TiO 2 rutile. / Pfanzelt, M.; Kubiak, P.; Jacke, S.; Dimesso, L.; Jaegermann, W.; Wohlfahrt-Mehrens, M.

In: Journal of the Electrochemical Society, Vol. 159, No. 6, 2012.

Research output: Contribution to journalArticle

Pfanzelt, M, Kubiak, P, Jacke, S, Dimesso, L, Jaegermann, W & Wohlfahrt-Mehrens, M 2012, 'SEI formation on TiO 2 rutile', Journal of the Electrochemical Society, vol. 159, no. 6. https://doi.org/10.1149/2.085206jes
Pfanzelt M, Kubiak P, Jacke S, Dimesso L, Jaegermann W, Wohlfahrt-Mehrens M. SEI formation on TiO 2 rutile. Journal of the Electrochemical Society. 2012;159(6). https://doi.org/10.1149/2.085206jes
Pfanzelt, M. ; Kubiak, P. ; Jacke, S. ; Dimesso, L. ; Jaegermann, W. ; Wohlfahrt-Mehrens, M. / SEI formation on TiO 2 rutile. In: Journal of the Electrochemical Society. 2012 ; Vol. 159, No. 6.
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