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Sol-gel synthesis of Li1.3Al0.3Ti1.7(PO4)3 solid electrolyte

  • Synthesis and Properties of Inorganic Compounds
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Abstract

A modified sol-gel process was studied as applied to synthesize a lithium-conducting solid electrolyte of composition Li1.3Al0.3Ti1.7(PO4)3 (LATP) using water-soluble salts Al(NO3)3 · 9H2O, LiNO3 · 3H2O, and (NH4)2HPO4 and a titanium(IV) citrate complex. As-synthesized samples were characterized using X-ray powder diffraction, DSC/TG, SEM, and impedance spectroscopy. Sintering of as-synthesized amorphous powders at 700°C was found to yield LATP with crystallite sizes of 42–48 nm. Ionic conductivity of the electrolyte measured in the frequency range 25–106 Hz in disks having 86–90% density that were sintered at 1000°C was (3–4) × 10−4 S/cm. Temperature-dependent ionic conductivity was studied in the range 25–200°C. The activation energy of conduction was determined for LATP.

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Authors and Affiliations

  1. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Resources, Kola Scientific Center, Russian Academy of Sciences, ul. Fersmana 14, Apatity, Murmansk oblast, 184200, Russia

    G. B. Kunshina, O. G. Gromov, E. P. Lokshin & V. T. Kalinnikov

Authors
  1. G. B. Kunshina
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  2. O. G. Gromov
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  3. E. P. Lokshin
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  4. V. T. Kalinnikov
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Correspondence to G. B. Kunshina.

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Original Russian Text © G.B. Kunshina, O.G. Gromov, E.P. Lokshin, V.T. Kalinnikov, 2014, published in Zhurnal Neorganicheskoi Khimii, 2014, Vol. 59, No. 5, pp. 583–588.

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Kunshina, G.B., Gromov, O.G., Lokshin, E.P. et al. Sol-gel synthesis of Li1.3Al0.3Ti1.7(PO4)3 solid electrolyte. Russ. J. Inorg. Chem. 59, 424–430 (2014). https://doi.org/10.1134/S0036023614050118

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  • DOI: https://doi.org/10.1134/S0036023614050118

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