机械化学合成ali3掺杂Li4SnS4非晶固体电解质中离子电导率和弛豫的研究

IF 3.5 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Solid State Chemistry Pub Date : 2025-09-23 DOI:10.1016/j.jssc.2025.125679

Nguyen Huu Huy Phuc , Anh-Tu Tran , Viet-Toan Tran , Vinh-Dat Vuong , Pham Tan Thi

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引用次数: 0

摘要

采用机械化学合成方法制备了非晶（100-x）Li4SnS4−xAlI3固体电解质（SEs），研究了AlI3掺杂对非晶Li4SnS4离子电导率和锂离子动力学的影响。采用x射线衍射（XRD）、拉曼光谱（Raman spectroscopy）、扫描电镜-能谱（SEM-EDS）和透射电镜-能谱（TEM-EDS）对样品进行了结构表征。在30°C时，93.33Li4SnS4-6.67AlI3的离子电导率为~ 1.2 × 10−4 S cm−1，与已有报道的基于li4sns4的se相当。通过交流阻抗谱分析研究了AlI3掺杂对样品电导率和介电性能的影响。电导率分析表明，离子形成是制备的se中电导率屏障的主要贡献者。所开发的策略提高了非晶Li4SnS4固体电解质的离子电导率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Investigation of ionic conductivity and relaxation in mechanochemical synthesized AlI3-doped Li4SnS4 amorphous solid electrolyte

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Investigation of ionic conductivity and relaxation in mechanochemical synthesized AlI3-doped Li4SnS4 amorphous solid electrolyte

Amorphous (100-x)Li₄SnS₄−xAlI₃ solid electrolytes (SEs) were prepared via mechanochemical synthesis to study the effect of AlI₃ doping on the ionic conductivity and Li-ion dynamics in amorphous Li₄SnS₄. The structure of the samples was characterized using X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS) and transmission electron microscopy-energy dispersive spectroscopy (TEM-EDS). The ionic conductivity of amorphous 93.33Li₄SnS₄-6.67AlI₃ was ∼1.2 × 10⁻⁴ S cm⁻¹ at 30 °C, comparable to that of reported Li₄SnS₄-based SEs. The effect of AlI₃ doping on the conductivity and dielectric properties of the samples was studied through alternating current (AC) impedance spectroscopy analysis. The conductivity analysis suggested that ion formation was the main contributor to the conductivity barrier in the prepared SEs. The developed strategy improved the ionic conductivity of the amorphous Li₄SnS₄ solid electrolyte.

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来源期刊

Journal of Solid State Chemistry 化学-无机化学与核化学

CiteScore

6.00

自引率

9.10%

发文量

848

审稿时长

25 days

期刊介绍： Covering major developments in the field of solid state chemistry and related areas such as ceramics and amorphous materials, the Journal of Solid State Chemistry features studies of chemical, structural, thermodynamic, electronic, magnetic, and optical properties and processes in solids.