Статья
2021

Synthesis and Ionic Conductivity of LiZr2(VO4)x(PO4)3 – x


V. I. Pet’kov V. I. Pet’kov , A. S. Shipilov A. S. Shipilov , D. G. Fukina D. G. Fukina , I. A. Stenina I. A. Stenina , A. B. Yaroslavtsev A. B. Yaroslavtsev
Российский электрохимический журнал
https://doi.org/10.1134/S1023193521040078
Abstract / Full Text

Vanadate phosphates LiZr2(VO4)x(PO4)3 – x are synthesized by the sol-gel technique with subsequent annealing and studied using X-ray diffraction analysis, IR spectroscopy, synchronous differential scanning calorimetry, thermogravimetric analysis, and impedance spectroscopy. In the LiZr2(VO4)x(PO4)3 – x system, a limited series of solid solutions (0 ≤ х ≤ 0.8) with the NASICON (Sc2(WO4)3) structure forms. An increase in the vanadium content in the LiZr2(VO4)x(PO4)3 – x system leads to an increase in the lithium-ionic conductivity which reaches 6.3 × 10–3 S/cm for LiZr2(VO4)0.6(PO4)2.4 at 570 K. At elevated temperature, the temperature dependences of conductivity of samples with x = 0.4–0.8 demonstrate kinks associated with dissolution of silver from electrodes in these materials.

Author information
  • Lobachevskii State University, 603950, Nizhny Novgorod, Russia

    V. I. Pet’kov, A. S. Shipilov & D. G. Fukina

  • Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119071, Moscow, Russia

    I. A. Stenina & A. B. Yaroslavtsev

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