J. Mater. Sci. Technol. ›› 2020, Vol. 55: 81-88.DOI: 10.1016/j.jmst.2019.05.031

• Research Article • Previous Articles     Next Articles

Enhanced cycling stability of antimony anode by downsizing particle and combining carbon nanotube for high-performance sodium-ion batteries

Chuang Liua, Fanxin Zenga, Li Xub, Shuangyu Liub, Jincheng Liuc,*(), Xinping Aia, Hanxi Yanga, Yuliang Caoa,*()   

  1. a College of Chemistry and Molecular Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430072, China
    b State Key Laboratory of Advanced Transmission Technology, Global Energy Interconnection Research Institute Co. Ltd., Beijing 102211, China
  • Received:2019-02-17 Accepted:2019-04-08 Published:2020-10-15 Online:2020-10-27
  • Contact: Jincheng Liu,Yuliang Cao

Abstract:

Antimony (Sb) nanoparticles (SbNP) encapsulated in multiwalled carbon nanotubes (MWCNTs) matrix has been fabricated by a facile two-step ball milling strategy, including a sand milling process to prepare Sb nanoparticles and following high-energy ball milling to synthesize SbNP-MWCNT composite. As an anode material for sodium-ion batteries (SIBs), the SbNP-MWCNT composite with high Sb content (80%) can deliver a reversible capacity of 471.1 mA h g-1 at 50 mA g-1 with an initial coulombic efficiency of 73.5%, excellent cycling stability (94.1% capacity retention at 800 mA g-1) and high rate capability (210.7 mA h g-1 at 3200 mA g-1). The excellent electrochemical performance of the SbNP-MWCNT composite results from the synergistic effect of downsizing Sb particles and combining MWCNTs.

Key words: Antimony, Nanoparticles, Carbon nanotubes, Anode, Sodium ion battery, Mechanical ball milling