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Synthesis and study of ion conductivity of Li3x La2/3–x TiO3

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Abstract

The sol–gel technique is used to study synthesis of lithium–lanthanum titanate Li3x La2/3–x TiO3 (x = 0.167 and 0.11) using water–soluble salts of LiNO3 · 3H2O, La2O3 and a citrate Ti(IV) complex. This process allows obtaining single–phase crystalline compounds of Li0.5La0.5TiO3 and Li0.33La0.56TiO3 with a perovskite structure after precursor sintering at 1000°C. The synthesized Li3x La2/3–x TiO3 powders are described using the methods of XRD, DTA/TG, and SEM microscopy. Conductivity of Li3x La2/3–x TiO3 by the Li+ ion is determined using the impedance spectrometry technique in the range of 1–2 × 106 Hz and is 8 × 10–4 S/cm at the room temperature. The temperature dependence is studied and the activation energy of ion conductivity of Li0.33La0.56TiO3 is studied in the range of 25–200°C.

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Authors and Affiliations

  1. I.V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Science Center of the Russian Academy of Sciences, Apatity, Russia

    G. B. Kunshina, V. V. Efremov & E. P. Lokshin

Authors
  1. G. B. Kunshina
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  2. V. V. Efremov
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  3. E. P. Lokshin
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Correspondence to G. B. Kunshina.

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Based on the paper presented at the XII Meeting “Fundamental Problems of Solid State Ionics”, Chernogolovka (Russia), July 3–5 2014.

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Kunshina, G.B., Efremov, V.V. & Lokshin, E.P. Synthesis and study of ion conductivity of Li3x La2/3–x TiO3 . Russ J Electrochem 51, 551–555 (2015). https://doi.org/10.1134/S1023193515060130

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  • DOI: https://doi.org/10.1134/S1023193515060130

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