Te-Doped Bi 2 Se 3 @NC Nanocomposites for High-Performance Li-Ion Battery Anodes

Yaqin Zhu, Yan Wu, Jiachang Zhao (), Xiaohui Zeng, Jianfeng Mao and Jiajun Chen ()
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Yaqin Zhu: College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
Yan Wu: College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
Jiachang Zhao: College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
Xiaohui Zeng: Institute for Superconducting and Electronic Materials (ISEM), University of Wollongong, Wollongong, NSW 2522, Australia
Jianfeng Mao: School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
Jiajun Chen: Pegasus Power Energy Co., Ltd., Hangzhou 310019, China

Sustainability, 2023, vol. 15, issue 23, 1-12

Abstract: Bismuth-based anodes are promising for lithium-ion batteries owing to their high theoretical capacity, garnering significant attention in recent decades. Despite its intrinsic advantages, this anode material has the shortcoming of excessive volume expansion during the charging and discharging processes, which significantly reduces the cycling stability. In this work, a nitrogen-doped carbon-coated Bi 2 Se 3−x Te x composite (Bi 2 Se 3−x Te x @NC) with excellent electrochemical properties was synthesized by the solvothermal method followed by heat treatment. Benefiting from its unique structure and Te-doping properties, the nitrogen-doped carbon-coated Bi 2 Se 3−x Te x composite maintains a discharge specific capacity of 464.0 mAh g −1 after 60 cycles at a current density of 0.1 A g −1 . This research presents an efficient approach for the preparation of nitrogen-doped carbon-coated anode materials and a fresh perspective on battery electrode material design.

Keywords: lithium-ion batteries; anode materials; bismuth base; electrochemical performance (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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