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

Yansong Zhu; Chunting Wang; Zhenjie Cheng; Qian Yao; Jie Su; Bo Chen; Jian Yang; Yitai Qian

doi:10.1039/d2cc00833e

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

Chem Commun (Camb). 2022 Apr 21;58(33):5140-5143. doi: 10.1039/d2cc00833e.

Authors

Yansong Zhu¹, Chunting Wang¹, Zhenjie Cheng¹, Qian Yao¹, Jie Su¹, Bo Chen², Jian Yang¹, Yitai Qian^{1

3}

Affiliations

¹ Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China. yangjian@sdu.edu.cn.
² Department of Chemistry, City University of Hong Kong, Hong Kong, China. bchen005@e.ntu.edu.sg.
³ Hefei National Laboratory for Physical Science at Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China.

PMID: 35381054
DOI: 10.1039/d2cc00833e

Abstract

Anode materials with a high initial coulombic efficiency and a long lifespan are highly desirable for sodium-ion batteries. Here, bimetallic μ-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).