Journal of Lanzhou University of Technology ›› 2022, Vol. 48 ›› Issue (5): 15-20.

• Materials Science and Engineering • Previous Articles     Next Articles

Hydrothermal preparation of nano-SnO2 electrode materials and their lithium storage properties

FAN Ying-qiang1, CHEN Xiu-juan1,2, WANG Lin-lin1, WU Jia-kui1   

  1. 1. State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou Univ. of Tech., Lanzhou 730050, China;
    2. School of Mechanical and Electronical Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China
  • Received:2021-10-21 Online:2022-10-28 Published:2022-11-21

Abstract: SnO2 anode material was prepared by a simple hydrothermal method using SnCl2·2H2O, polyethylene glycol 400 (PEG400) and Na3C6H5O7·2H2O as the main raw materials. The composition and microscopic morphology of the prepared negative materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Theelectrochemical properties were also tested using galvanostatic charge/discharge (DC) and cyclic voltammetry (CV) methods. The results showed that the addition of PEG400 can effectively improve the surface morphology of SnO2, reduce its agglomeration phenomenon and significantly improve the electrochemical properties. When the addition content was 10 mL, the synthesized SnO2 has good cycling and multiplicative performance with a first discharge capacity of 2 774 mAh/g andthe discharge capacity of 600 mAh/g after 50 cycles, which was significantly higher than that of SnO2 electrode materialsbefore the modification.

Key words: hydrothermal, SnO2, Lithium-ion battery anode material, electrochemical performance

CLC Number: