Li intercalation in transparent Ti-Ce oxide films: Energetics and ion dynamics

M. Strømme Mattsson; A. Azens; G. A. Niklasson; C. G. Granqvist; J. Purans

doi:10.1063/1.364424

Li intercalation in transparent Ti-Ce oxide films: Energetics and ion dynamics

M. Strømme Mattsson^*
, A. Azens
, G. A. Niklasson
, C. G. Granqvist
, J. Purans

^*Corresponding author for this work

Thin Films Laboratory, Institute of Solid State Physics

Uppsala University

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Abstract

Films of Ti dioxide, mixed Ti-Ce oxide, and Ce dioxide were produced by reactive dc magnetron sputtering. Electrochemical lithiation was probed by chronopotentiometry, cyclic voltammetry together with optical transmittance recording, and impedance spectroscopy. Evidence was found for inserted electrons being accommodated in Ce 4f states; this contention was supported by preliminary results from x-ray absorption fine-structure spectroscopy. These electrons do not produce luminous electrochromism. The variation of the chemical diffusion coefficient of Li, with film composition and Li content, was also studied.

Original language	English
Pages (from-to)	6432-6437
Number of pages	6
Journal	Journal of Applied Physics
Volume	81
Issue number	9
DOIs	https://doi.org/10.1063/1.364424
Publication status	Published - 1 May 1997

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AU - Strømme Mattsson, M.

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AU - Niklasson, G. A.

AU - Granqvist, C. G.

AU - Purans, J.

PY - 1997/5/1

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N2 - Films of Ti dioxide, mixed Ti-Ce oxide, and Ce dioxide were produced by reactive dc magnetron sputtering. Electrochemical lithiation was probed by chronopotentiometry, cyclic voltammetry together with optical transmittance recording, and impedance spectroscopy. Evidence was found for inserted electrons being accommodated in Ce 4f states; this contention was supported by preliminary results from x-ray absorption fine-structure spectroscopy. These electrons do not produce luminous electrochromism. The variation of the chemical diffusion coefficient of Li, with film composition and Li content, was also studied.

AB - Films of Ti dioxide, mixed Ti-Ce oxide, and Ce dioxide were produced by reactive dc magnetron sputtering. Electrochemical lithiation was probed by chronopotentiometry, cyclic voltammetry together with optical transmittance recording, and impedance spectroscopy. Evidence was found for inserted electrons being accommodated in Ce 4f states; this contention was supported by preliminary results from x-ray absorption fine-structure spectroscopy. These electrons do not produce luminous electrochromism. The variation of the chemical diffusion coefficient of Li, with film composition and Li content, was also studied.

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ER -

Li intercalation in transparent Ti-Ce oxide films: Energetics and ion dynamics

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