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Abstract <p>A new efficient method for the synthesis of solid electrolyte with high lithium-ion conductivity with NASICON structure of composition Li<sub>1.3</sub>Al<sub>0.3</sub>Ti<sub>1.7</sub>(PO<sub>4</sub>)<sub>3</sub> (LATP) has been proposed. The advantage of the developed method is the use of liquid-phase precursor based on titanium oxalate complex. A single-phase well-crystallized LATP has found to form at 750°C. The total ionic conductivity value of LATP after sintering at 900°C measured by impedance spectroscopy has been found to be of 2.6 × 10<sup>–4</sup> S/cm at ambient temperature, while activation energy of conductivity has been found to be of 0.28 eV. The proposed method of synthesis is promising for scale-up and mass production.</p>

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Synthesis of Li1.3Al0.3Ti1.7(PO4)3 Solid Electrolyte from Oxalate Precursor

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • G. B. Kunshina,
  • I. V. Bocharova

摘要

Abstract

A new efficient method for the synthesis of solid electrolyte with high lithium-ion conductivity with NASICON structure of composition Li1.3Al0.3Ti1.7(PO4)3 (LATP) has been proposed. The advantage of the developed method is the use of liquid-phase precursor based on titanium oxalate complex. A single-phase well-crystallized LATP has found to form at 750°C. The total ionic conductivity value of LATP after sintering at 900°C measured by impedance spectroscopy has been found to be of 2.6 × 10–4 S/cm at ambient temperature, while activation energy of conductivity has been found to be of 0.28 eV. The proposed method of synthesis is promising for scale-up and mass production.