Li intercalation in transparent Ti–Ce oxide films: Energetics and ion dynamics
- 1 May 1997
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 81 (9) , 6432-6437
- https://doi.org/10.1063/1.364424
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 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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