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<p>The structures of lithiated fluorite-like molybdates of the <i>Ln</i><sub>5</sub>Mo<sub>3</sub>O<InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11445_2025_8181_Article_IEq1.gif" Format="GIF" Height="12" Rendition="HTML" Resolution="72" Type="Linedraw" Width="30" /> </InlineMediaObject> <EquationSource Format="TEX">\(_{{16 + \delta }}\)</EquationSource> <!--Cryst2560056Orlova-m1--> </InlineEquation> family were studied in the temperature range of 20–777°С (293–1050 К) by accurate X-ray diffraction analysis. A thermally activated redistribution of oxygen ions over the lattice and interstitial positions and reversible changes in the positions occupancies upon heating–cooling were established. The thermal stability, the oxygen ionic conductivity, and dielectric properties of ceramic samples of undoped and Li-containing phases Nd<sub>5</sub>Mo<sub>3</sub>O<InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11445_2025_8181_Article_IEq1.gif" Format="GIF" Height="12" Rendition="HTML" Resolution="72" Type="Linedraw" Width="30" /> </InlineMediaObject> <EquationSource Format="TEX">\(_{{16 + \delta }}\)</EquationSource> <!--Cryst2560056Orlova-m2--> </InlineEquation> were investigated in the temperature range of 20–900°С. The study demonstrated the possibility of controlling the functional properties of materials for medium-temperature solid oxide fuel cells.</p>

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Structural Features and Transport Properties of Lithiated Fluorite-Like Molybdates Nd5Mo3O16 in the Temperature Range of 20–900°С

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • E. I. Orlova,
  • E. S. Smirnova,
  • N. V. Lyskov,
  • E. P. Kharitonova,
  • T. A. Sorokin,
  • A. M. Antipin,
  • E. V. Sidorova,
  • N. E. Novikova,
  • N. I. Sorokina,
  • V. I. Voronkova,
  • O. A. Alekseeva

摘要

The structures of lithiated fluorite-like molybdates of the Ln5Mo3O \(_{{16 + \delta }}\) family were studied in the temperature range of 20–777°С (293–1050 К) by accurate X-ray diffraction analysis. A thermally activated redistribution of oxygen ions over the lattice and interstitial positions and reversible changes in the positions occupancies upon heating–cooling were established. The thermal stability, the oxygen ionic conductivity, and dielectric properties of ceramic samples of undoped and Li-containing phases Nd5Mo3O \(_{{16 + \delta }}\) were investigated in the temperature range of 20–900°С. The study demonstrated the possibility of controlling the functional properties of materials for medium-temperature solid oxide fuel cells.