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Abstract <p>The Li<sub>1.5 +</sub> <sub><i>х</i></sub>Al<sub>0.5</sub>Cr<sub><i>x</i></sub>Ge<sub>1.5 −</sub> <sub><i>x</i></sub>P<sub>3</sub>O<sub>12 − δ</sub> (<i>x</i> = 0–0.2) solid electrolytes for all-solid-state batteries were produced by glass crystallization. The products were identified by XRD as LiGe<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub>-based NASICON solid solutions with various unit cell parameters. The total room-temperature Li<sup>+</sup> conductivity of the prepared samples had similar values of about 10<sup>−4</sup> S/cm. The Li<sub>1.6</sub>Al<sub>0.5</sub>Cr<sub>0.1</sub>Ge<sub>1.4</sub>P<sub>3</sub>O<sub>12 − δ</sub> composition exhibited the highest ionic conductivity of 3.43 × 10<sup>−4</sup> and 4.26 × 10<sup>−3</sup> S/cm at 25 and 100°C, respectively. The electronic conductivity as determined by the DC polarization method with blocking platinum electrodes, did not exceed 10<sup>−9</sup> S/cm for all compositions studied.</p>

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Chromium-Containing Li1.5Al0.5Ge1.5(PO4)3 Glass-Ceramics: Preparation and Electrical Conductivity

  • 期刊论文

  • 发表日期：

    2026年1月1日

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  • S. V. Pershina

摘要

Abstract

The Li1.5 + хAl0.5CrxGe1.5 − xP3O12 − δ (x = 0–0.2) solid electrolytes for all-solid-state batteries were produced by glass crystallization. The products were identified by XRD as LiGe2(PO4)3-based NASICON solid solutions with various unit cell parameters. The total room-temperature Li+ conductivity of the prepared samples had similar values of about 10−4 S/cm. The Li1.6Al0.5Cr0.1Ge1.4P3O12 − δ composition exhibited the highest ionic conductivity of 3.43 × 10−4 and 4.26 × 10−3 S/cm at 25 and 100°C, respectively. The electronic conductivity as determined by the DC polarization method with blocking platinum electrodes, did not exceed 10−9 S/cm for all compositions studied.