Bimetallic Bi-Sn microspheres as high initial coulombic efficiency and long lifespan anodes for sodium-ion batteries

作者：Zhu, Yansong; Wang, Chunting; Cheng, Zhenjie; Yao, Qian; Su, Jie; Chen, Bo^*; Yang, Jian^*; Qian, Yitai

来源：Chemical Communications, 2022, 58(33): 5140-5143.

DOI：10.1039/d2cc00833e

• NA-ION
• MICROSIZED SN
• ALLOY ANODES
• MU-SN
• PERFORMANCE
• ELECTROLYTE
• VOLTAGE
• COMPOSITE
• CAPACITY

Anode materials with a high initial coulombic efficiency and a long lifespan are highly desirable for sodium-ion batteries. Here, bimetallic mu-BiSn microspheres well combine the high capacity of Sn and the good stability of Bi together, exhibiting superior electrochemical performance, such as a high initial Coulombic efficiency (90.6%), a good cycling stability (541 mA h g(-1) after 3000 cycles at 2 A g(-1)) and an excellent rate capability (393 mA h g(-1) at 10 A g(-1)).

• 单位
  山东大学