Boosting lithium compatibility and air stability of halide electrolytes through cyanamide substitution.
作者信息
Zong Jiawei, Li Jiacong, Cao Yuge, Bi Hui, Wang Linlin, Huang Fuqiang
机构信息
School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, P. R. China.
State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P. R. China.
出版信息
Chem Commun (Camb). 2025 Jun 19;61(51):9290-9293. doi: 10.1039/d5cc01773d.
The application of halide electrolytes is hindered by poor lithium metal compatibility and low air stability. In this work, we partially substitute chloride ions in the halide electrolyte (LiZrCl) with a triatomic linear cyanamide group (NCN). By utilizing the conjugated cyanamide group, lithium-ion migration is promoted, while significantly suppressing lithium dendrite growth. The assembled Li/Li symmetric cell maintains stable cycling for over 1100 hours. Impressively, ionic conductivity degradation is also significantly restrained when exposed to air with 10% humidity for 24 hours. When the modified halide electrolyte is paired with the lithium metal anode, the all-solid-state lithium batteries demonstrate outstanding electrochemical performance.
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