期刊
NANO ENERGY
卷 71, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2020.104633
关键词
Hybrid quasi-solid electrolytes; Lithium-sulfur batteries; Garnet; Li7La3Zr2O12; Sheets
类别
资金
- NBL (Biomedical Research Council, Agency for Science, Technology and Research, Singapore)
Applications of lithium batteries are challenged by their unsatisfactory safety profiles. Solid-state batteries present a very promising solution to overcome the safety issues, but their performance requires major improvement. Hybrid quasi-solid electrolyte (HQSE), comprising solid and liquid components, has emerged as a practical compromise for safer and high-performance Li batteries. Li-S system is one of the most promising Li battery candidates; however, the performance of Li-S hybrid quasi-solid battery still needs to be further enhanced. Herein, a new HQSE design comprising Li7La3Zr2O12 sheet-based solid framework imbibed with liquid electrolyte is applied to Li-S battery. The liquid-infused 3D architecture allows fast Li ion mobility and low interfacial resistance. It is also compatible with Li metal, highly processable, unleakable, and thermally stable. These attributes result in a high-performance Li-S hybrid quasi-solid system with a very good safety profile. The novel HQSE design also demonstrates improved anodic stability, which is very promising for high-voltage cathodes. The excellent performance, enhanced safety, and broad applicability of our sheet-based LLZO HQSE set the path for applications in other types of Li batteries to achieve both safe and high-performance energy storage systems.
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