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Abstract <p>Nanosized powders (Ce<sub>1–<i>x</i></sub>Pr<sub><i>x</i></sub>)<sub>0.95</sub>Sr<sub>0.05</sub>F<sub>2.95</sub> (<i>x</i> = 0, 0.5, 1) with a tysonite structure (sp. gr. <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="12201_2025_10793_Article_IEq1.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="38" /> </InlineMediaObject> <EquationSource Format="TEX">\(P\bar {3}c1\)</EquationSource> <!--NanoTech2560009Sorokin-m1--> </InlineEquation>) are synthesized by the thermal decomposition of trifluoroacetate precursors in an inert environment. The ceramics are cold pressed, and their X-ray and conductometric properties are studied. It is found that the mixed composition nanoceramics (Ce<sub>0.5</sub>Pr<sub>0.5</sub>)<sub>0.95</sub>Sr<sub>0.05</sub>F<sub>2.95</sub> (<i>x</i> = 0.5) demonstrate a higher electrolytic characteristics compared to the compositions with <i>x</i> = 0 and 1. The value of its ionic conductivity is σ<sub><i>dc</i></sub> = 6.5 × 10<sup>‒3</sup>&#xa0;S/cm at 500 K. The cation composition of the studied solid electrolyte (Ce<sub>0.5</sub>Pr<sub>0.5</sub>)<sub>0.95</sub>Sr<sub>0.05</sub>F<sub>2.95</sub> is promising for further optimization of the ceramic synthesis process and application in various electrochemical devices.</p>

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Ceramic Synthesis and Ionic Conductivity of Nanofluorides (Ce1–xPrx)0.95Sr0.05F2.95 with a Tysonite Structure Prepared by Thermal Decomposition of Trifluoroacetate Precursors

  • 期刊论文

  • 发表日期：

    2025年4月1日

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  • N. I. Sorokin,
  • A. V. Koshelev,
  • D. N. Karimov

摘要

Abstract

Nanosized powders (Ce1–xPrx)0.95Sr0.05F2.95 (x = 0, 0.5, 1) with a tysonite structure (sp. gr. \(P\bar {3}c1\) ) are synthesized by the thermal decomposition of trifluoroacetate precursors in an inert environment. The ceramics are cold pressed, and their X-ray and conductometric properties are studied. It is found that the mixed composition nanoceramics (Ce0.5Pr0.5)0.95Sr0.05F2.95 (x = 0.5) demonstrate a higher electrolytic characteristics compared to the compositions with x = 0 and 1. The value of its ionic conductivity is σdc = 6.5 × 10‒3 S/cm at 500 K. The cation composition of the studied solid electrolyte (Ce0.5Pr0.5)0.95Sr0.05F2.95 is promising for further optimization of the ceramic synthesis process and application in various electrochemical devices.