离子电导率
退火(玻璃)
材料科学
电解质
电导率
粒径
大气温度范围
离子键合
电极
分析化学(期刊)
化学工程
冶金
离子
化学
热力学
物理化学
色谱法
有机化学
物理
工程类
作者
Yo-Seob Kim,Seung-Hyeon Jeon,Woosuk Cho,KyungSu Kim,Ji‐Sang Yu,Jeongdoo Yi,Goojin Jeong,Kern Ho Park
出处
期刊:ACS applied energy materials
[American Chemical Society]
日期:2022-12-14
卷期号:5 (12): 15442-15451
被引量:4
标识
DOI:10.1021/acsaem.2c03040
摘要
All-solid-state batteries employing inorganic solid electrolytes are considered a promising next-generation energy storage system. Especially, argyrodite-type Li6PS5Cl (LPSCl) was highlighted for its good ionic conductivity and malleability. In the electrode level, achieving an efficient Li+ pathway even with the maximized active material proportion and electrode mass loading is vital for a high energy density. Therefore, a smaller solid electrolyte particle is highly sought for. Herein, we demonstrated a spiral jet mill process for refining LPSCl particle size. The mean particle size (D50) of LPSCl was reduced from 39.9 to 1.9 μm where the ionic conductivity was decreased from 2.0 to 0.23 mS cm–1. The post-annealing in a mild-temperature range (T < 250 °C) led to the even more decreased ionic conductivity. Although the ionic conductivity was restored when T > 300 °C, this high-temperature annealing resulted in severe particle agglomeration. Spectroscopic observations revealed that particle surfaces were damaged during pulverization and irreversible sulfur losses occurred during the mild-temperature annealing.
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