Research progress on surface modification of silicon anode for lithium-ion batteries

Silicon has become an important anode material for high energy density lithium-ion batteries due to its higher theoretical specific capacity, low intercalation potential and abundant reserves. However, further industrial applications of silicon are restricted by disadvantages of large volume expansion effect and low electrical conductivity. In view of the existing problems, surface modifications of silicon anode materials, including surface coating, surface functionalization and artificial solid electrolyte interface were summarized and discussed with modification strategies and improvement mechanism of electrochemical properties. Finally, future development directions of silicon surface modification technology was prospected aiming at exploration of high performance silicon anode materials for lithium-ion batteries. © 2022, Editorial Office of FINE CHEMICALS. All right reserved.