Ag7+x(P1-xGex)S6陶瓷中微结构和晶体结构缺陷对离子传输的影响

IF 3.5 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Solid State Chemistry Pub Date : 2025-08-27 DOI:10.1016/j.jssc.2025.125611

Artem Pogodin , Mykhailo Filep , Tetyana Malakhovska , Vasyl Vakulchak , Vladimir Komanicky , Serhii Vorobiov , Iryna Shender , Vitaliy Bilanych , Oleksandr Kokhan , Ruslan Mariychuk

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引用次数: 0

摘要

以微晶粉末为原料制备了Ag7+x(P1-xGex) s6基超离子陶瓷材料。采用XRD法研究了微晶Ag7+x(P1-xGex)S6粉末的物相组成和晶体结构。采用冷压退火法制备陶瓷。研究了制备的Ag7+x(P1-xGex) s6基陶瓷材料的显微组织、元素组成、显微硬度和电性能。与初始Ag7PS6和Ag8GeS6相比，x = 0.1、0.25、0.33、0.5、0.75的Ag7+x(P1-xGex)S6固溶体陶瓷的离子电导率显著提高，活化能显著降低。Ag7.5P0.5Ge0.5S6的离子电导率最大值为4.29 × 10−2 S/cm。电导率不显著，在10−6 ~ 10−8 S/cm之间。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Influence of microstructural and crystal structure defects on ionic transport in Ag7+x(P1-xGex)S6 ceramics

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Influence of microstructural and crystal structure defects on ionic transport in Ag7+x(P1-xGex)S6 ceramics

Ag_7+x(P_1-xGe_x)S₆-based superionic ceramic materials were prepared from microcrystalline powders. The phase composition and crystal structure of microcrystalline Ag_7+x(P_1-xGe_x)S₆ powders were investigated by XRD method. Ceramics were prepared by cold pressing with following annealing. The microstructure, elemental composition, microhardness and electrical properties of prepared Ag_7+x(P_1-xGe_x)S₆-based ceramic materials have been examined. Ceramics of Ag_7+x(P_1-xGe_x)S₆ solid solutions with x = 0.1, 0.25, 0.33, 0.5, 0.75 demonstrated a sharp increase of ionic conductivity and a decrease in its activation energy compared to initial Ag₇PS₆ and Ag₈GeS₆. The maximum value of the ionic conductivity (4.29 × 10⁻² S/cm) is observed for composition Ag_7.5P_0.5Ge_0.5S₆. The electronic conductivity is not significant and is within 10⁻⁶ – 10⁻⁸ S/cm.

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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.