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Cation mobility in Li1 + x Ti2 − x Cr x (PO4)3 NASICON-type phosphates

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Abstract

Li1 + x Ti2 − x Cr x (PO4)3 NASICON-type materials have been prepared and characterized by X-ray diffraction, scanning electron microscopy, and impedance spectroscopy. The results demonstrate that Cr3+ doping increases the ionic conductivity of LiTi2(PO4)3 within the single-phase region of the doped material, which extends to x = 0.7. From temperature-dependent ionic conductivity data, the activation energy for lithium transport through interstitial sites and the enthalpy of defect formation in LiTi2(PO4)3 are estimated at 30.0 ± 0.5 and 56 ± 1 kJ/mol, respectively.

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Authors and Affiliations

  1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia

    A. I. Svitan’ko, S. A. Novikova, D. V. Safronov & A. B. Yaroslavtsev

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  1. A. I. Svitan’ko
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  2. S. A. Novikova
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  3. D. V. Safronov
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  4. A. B. Yaroslavtsev
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Correspondence to A. B. Yaroslavtsev.

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Original Russian Text © A.I. Svitan’ko, S.A. Novikova, D.V. Safronov, A.B. Yaroslavtsev, 2011, published in Neorganicheskie Materialy, 2011, Vol. 47, No. 12, pp. 1521–1526.

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Svitan’ko, A.I., Novikova, S.A., Safronov, D.V. et al. Cation mobility in Li1 + x Ti2 − x Cr x (PO4)3 NASICON-type phosphates. Inorg Mater 47, 1391–1395 (2011). https://doi.org/10.1134/S0020168511120181

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  • DOI: https://doi.org/10.1134/S0020168511120181

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