Surface engineering of nano silicon via in situ copolymer grafting for lithium ion batteries

Key Points

• The central aim is to enhance the performance of silicon nanoparticles in lithium-ion batteries through copolymer grafting.
• Utilized a dopamine-based copolymer for uniform coating of silicon nanoparticles.
• Constructed Si@void@C composites with internal void spaces.
• Evaluated the buffering of volume expansion and stability of the solid electrolyte interface (SEI) during cycling.
• Achieved uniform coating on silicon nanoparticles leading to improved structural integrity.
• Demonstrated effective buffering of volume expansion during battery cycling.
• Stabilized the solid electrolyte interface, enhancing long-term cycling performance.