四氢呋喃中β-Li3PS4 的湿化学合成过程中固体组分对粒度的影响

IF 5.4 3区 材料科学 Q2 CHEMISTRY, PHYSICAL
Aurelia Gries, F. Langer, J. Schwenzel, Matthias Busse
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引用次数: 0

摘要

对于全固态电池来说,固体电解质的粒度分布是一个关键因素。为了获得高活性质量的阴极活性材料和小孔隙率的复合阴极,小颗粒是首选。在这项工作中,研究了在四氢呋喃(THF)中湿化学合成 β-Li3PS4 时固体组分的影响。固体组分在 50 至 200 mg/mL 之间变化,并使用 X 射线衍射、扫描电子显微镜和电化学阻抗测量对所获得的样品进行了评估。所得颗粒的大小与固体组分有很大关系,同时保持了良好的离子导电性。浓度最高时,颗粒尺寸不超过 10 微米,但浓度最低时,颗粒尺寸可达 ~73 微米。室温下,最高浓度和最低浓度的离子导电率分别为 0.63 ± 0.01 × 10-4 S/cm 和 0.78 ± 0.01 × 10-4 S/cm。这些发现有助于改进定制硫化物固体电解质的生产。
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 Solid Fraction on Particle Size during Wet-Chemical Synthesis of β-Li3PS4 in Tetrahydrofuran
For all-solid-state batteries, the particle size distribution of the solid electrolyte is a critical factor. Small particles are preferred to obtain a high active mass loading of cathode active material and a small porosity in composite cathodes. In this work, the influence of the solid fraction in the wet-chemical synthesis of β-Li3PS4 in tetrahydrofuran (THF) is investigated. The solid fraction is varied between 50 and 200 mg/mL, and the obtained samples are evaluated using X-ray diffraction, SEM and electrochemical impedance measurements. The sizes of the resulting particles show a significant dependency on the solid fraction, while a good ionic conductivity is maintained. For the highest concentration, the particle sizes do not exceed 10 µm, but for the lowest concentration, particles up to ~73 µm can be found. The ionic conductivities at room temperature are determined to be 0.63 ± 0.01 × 10−4 S/cm and 0.78 ± 0.01 × 10−4 S/cm for the highest and lowest concentrations, respectively. These findings lead to an improvement towards the production of tailored sulfide solid electrolytes.
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来源期刊
ACS Applied Energy Materials
ACS Applied Energy Materials Materials Science-Materials Chemistry
CiteScore
10.30
自引率
6.20%
发文量
1368
期刊介绍: ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.
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