Abstract
Samples from the Li2 – 2xMxZrO3 (M = Ca, Zn), Li2 –xZr1 –xNbxO3, and Li2 +xZr1– xYxO3 systems were synthesized by conventional solid-state reaction. Estimated domains of Li2ZrO3-based solid solutions were established for all above-mentioned systems. The transport properties of the samples (temperature and composition dependences of their conductivity, and the conductivity activation energy) were studied by electrochemical impedance spectroscopy in the temperature range from 300 to 600°С. The most probable lithium-ion migration mechanisms depending on the Li2ZrO3 crystal structure were discussed. According to the obtained results, the synthesized materials are typical solid electrolytes with extrinsic disorder and quite low ionic conductivity (σ ∼ 10–2 –10–5 S cm–1).
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Notes
Here and below the ionic radii are taken from work [36].
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ACKNOWLEGMENTS
This work is performed partly with the use of equipment from the common use center “The Composition of the Matter” of the Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences.
Funding
The study is performed in the frames of budgetary plan of the Institute of the High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences (project no. АААА-А19-119020190042-7).
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Translated by Yu. Pleskov
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Kalashnova, A.V., Plaksin, S.V. & Shekhtman, G.S. Effect of Dopants on the Lithium Metazirconate Conductivity. Russ J Electrochem 56, 467–476 (2020). https://doi.org/10.1134/S1023193520060075
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DOI: https://doi.org/10.1134/S1023193520060075