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Abstract <p>Al<sup>3+</sup>-doped vanadium oxide is synthesized by hydrothermal method. The Al : V atomic ratio determined by inductively coupled plasma optical emission spectroscopy is 0.036 : 1, which corresponds to the formula Al<sub>0.072</sub>V<sub>2</sub>O<sub>5</sub>. The layered structure of Al<sup>3+</sup>-doped vanadium oxide is determined by the powder X-ray diffraction analysis. The electrochemical properties of Al<sup>3+</sup>-doped-vanadium-oxide-cathodes are studied in magnesium-containing propylene carbonate electrolyte 1 M Mg(ClO<sub>4</sub>)<sub>2</sub> using cyclic voltammetry and galvanostatic charge–discharge. Due to the large interlayer distance of 12.11 Å, the Al<sup>3+</sup>-doped vanadium oxide can reversibly intercalate magnesium ions into its crystal lattice. In addition to the electrochemical characterization of the cathodes, their structural changes after charge–discharge cycling are investigated by X-ray diffraction analysis, and the magnesium content of the cathode in the discharged state is estimated.</p>

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Electrochemical Properties of Aluminum Ion-Doped Vanadium Oxide AlxV2O5 in Magnesium-Containing Propylene Carbonate Electrolytes

  • 期刊论文

  • 发表日期：

    2025年11月1日

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  • A. Yu. Popov,
  • E. G. Tolstopyatova,
  • S. N. Eliseeva,
  • V. V. Kondratiev

摘要

Abstract

Al3+-doped vanadium oxide is synthesized by hydrothermal method. The Al : V atomic ratio determined by inductively coupled plasma optical emission spectroscopy is 0.036 : 1, which corresponds to the formula Al0.072V2O5. The layered structure of Al3+-doped vanadium oxide is determined by the powder X-ray diffraction analysis. The electrochemical properties of Al3+-doped-vanadium-oxide-cathodes are studied in magnesium-containing propylene carbonate electrolyte 1 M Mg(ClO4)2 using cyclic voltammetry and galvanostatic charge–discharge. Due to the large interlayer distance of 12.11 Å, the Al3+-doped vanadium oxide can reversibly intercalate magnesium ions into its crystal lattice. In addition to the electrochemical characterization of the cathodes, their structural changes after charge–discharge cycling are investigated by X-ray diffraction analysis, and the magnesium content of the cathode in the discharged state is estimated.