结晶度
锂(药物)
材料科学
无定形固体
结晶
相(物质)
杂质
分解
矿物学
结晶学
热力学
分析化学(期刊)
化学
复合材料
色谱法
医学
物理
有机化学
内分泌学
作者
Xin Lu,Anna Windmüller,Dana Schmidt,Sandro Schöner,Roland Schierholz,Chih‐Long Tsai,Hans Kungl,Xunfan Liao,Shicheng Yu,Hermann Tempel,Yiwang Chen,Rüdiger‐A. Eichel
出处
期刊:Small
[Wiley]
日期:2023-03-28
卷期号:19 (28)
被引量:3
标识
DOI:10.1002/smll.202300850
摘要
Abstract The structural and morphological changes of the Lithium superionic conductor Li 10 GeP 2 S 12 , prepared via a widely used ball milling‐heating method over a comprehensive heat treatment range (50 – 700 °C), are investigated. Based on the phase composition, the formation process can be distinctly separated into four zones: Educt, Intermediary, Formation, and Decomposition zone. It is found that instead of Li 4 GeS 4 –Li 3 PS 4 binary crystallization process, diversified intermediate phases, including GeS 2 in different space groups, multiphasic lithium phosphosulfides (Li x P y S z ), and cubic Li 7 Ge 3 PS 12 phase, are involved additionally during the formation and decomposition of Li 10 GeP 2 S 12 . Furthermore, the phase composition at temperatures around the transition temperatures of different formation zones shows a significant deviation. At 600 °C, Li 10 GeP 2 S 12 is fully crystalline, while the sample decomposed to complex phases at 650 °C with 30 wt.% impurities, including 20 wt.% amorphous phases. These findings over such a wide temperature range are first reported and may help provide previously lacking insights into the formation and crystallinity control of Li 10 GeP 2 S 12 .
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