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Abstract <p>LiCo<sub>1–<i>x</i></sub>Fe<sub><i>x</i></sub>PO<sub>4</sub> (<i>x</i> = 0, 0.1, 0.2, 0.4) composition materials with olivine structure were obtained by the sol–gel method and characterized using X-ray diffraction and thermogravimetric analysis, Mössbauer and impedance spectroscopy (AC). It has been shown that increase in Fe<sup>2+</sup> content increases conductivity of LiCo<sub>1–<i>x</i></sub>Fe<sub><i>x</i></sub>PO<sub>4</sub>. The ionic conductivity values at room temperature were ~10<sup>–9</sup> S/cm for LiCoPO<sub>4</sub> and 7 × 10<sup>–8</sup>–3 × 10<sup>–7</sup> S/cm for iron-doped materials.</p>

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The Effect of Partial Substitution of Cobalt for Iron in LiCoPO4 with Olivine Structure on Its Electrical Conductivity

  • 期刊论文

  • 发表日期：

    2025年2月1日

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  • S. A. Novikova,
  • M. S. Karpov,
  • D. Yu. Voropaeva,
  • I. A. Stenina,
  • V. S. Rusakov,
  • A. B. Yaroslavtsev

摘要

Abstract

LiCo1–xFexPO4 (x = 0, 0.1, 0.2, 0.4) composition materials with olivine structure were obtained by the sol–gel method and characterized using X-ray diffraction and thermogravimetric analysis, Mössbauer and impedance spectroscopy (AC). It has been shown that increase in Fe2+ content increases conductivity of LiCo1–xFexPO4. The ionic conductivity values at room temperature were ~10–9 S/cm for LiCoPO4 and 7 × 10–8–3 × 10–7 S/cm for iron-doped materials.