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Chloride in the battery pool
Nature Chemistry ( IF 19.2 ) Pub Date : 2023-05-05 , DOI: 10.1038/s41557-023-01206-0
Adam Weingarten 1
Affiliation  

The researchers synthesized Li3TiCl6 from LiCl and TiCl3 and, with electrochemical testing, found room-temperature ionic conductivities above 1 mS cm–1. This is a relatively high value that enables positive electrode formulation in which the active material comprises 95 wt% of the solid composite electrode, a greater proportion than the <80 wt% in most solid-state cells. X-ray diffraction and bond-valance site-energy calculations suggest that Li+ transport occurs within and between the layered planes of Li3TiCl6 more easily than in conventional oxide materials. Furthermore, under 350 MPa compression, Li3TiCl6 showed an 86% higher relative density, suggesting greater durability against crack formation during battery cycling.



中文翻译:

电池池中的氯化物

研究人员从 LiCl 和 TiCl 3合成了 Li 3 TiCl 6,并通过电化学测试发现室温离子电导率高于 1 mS cm –1。这是一个相对较高的值,可以实现正极配方,其中活性材料占固体复合电极的 95 wt%,比大多数固态电池中 <80 wt% 的比例更大。X 射线衍射和键价位能计算表明,与传统氧化物材料相比, Li +传输更容易发生在 Li 3 TiCl 6的层状平面内和层状平面之间。此外,在 350 MPa 压力下,Li 3 TiCl 6显示出高出 86% 的相对密度,表明在电池循环过程中抗裂纹形成的耐久性更高。

更新日期:2023-05-06
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