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General Chemistry

Special Issue: Lithium-Ion Batteries

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Preparation of Nanometer Cu6Sn5 and Its Application in Lithium-Ion Batteries Anode for Mass Production

Jiaao Yu,a,b Lin Zhang,a,b and Hongjun Ji*,a,b   

  1. a State Key Laboratory of Advanced Welding and Joining, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, Guangdong 518055, China
    b Flexible Printed Electronic Technology Center, Harbin Institute of Technology (Shenzhen), Shenzhen, Guangdong 518055, China
  • Received:2018-10-26 Revised:2019-01-11 Online:2020-03-29
  • Contact: Email: jhj7005@hit.edu.cn (H. J.)
  • Supported by:

Abstract: Cu6Sn5 nanoparticles have been synthesized successfully via chemical reduction method in aqueous solutions, which is a kind of intermetallic compound (IMC) with active/inert Sn-Cu interfaces. The active layer reacted with Li+ and the inert layer inhibited the volume change effectively. Meanwhile, reduced oxide graphene (RGO)/Cu6Sn5 composites were also prepared by the similar method for the reason that the presence of RGO alleviated the aggregation of Cu6Sn5 nanoparticles. Therefore, RGO/Cu6Sn5 nanoparticles showed more su-perior electrochemical performance compared with Cu6Sn5 nanoparticles. The results showed that RGO/Cu6Sn5 nanoparticles exhibited promising cycling stability (461 mAh·g-1 after 18 cycles), high rate ca-pability and prominent capacity retention, which can be extensively used in the field of lithium-ion battery anode. Herein, we also develop a simple and environmantal friendly fabrication approach to prepare Cu6Sn5 nano-composites, which is suitable for mass production.


Key words: Cu6Sn5 nanoparticles, reduced oxide graphene/Cu6Sn5 nanoparticles, chemical reduction method, electro-chemical performance

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