Si@Fe3O4/AC composite with interconnected carbon nano-ribbons network for high-performance lithium-ion battery anodes

• DOI: 10.1016/j.heliyon.2024.e25426
• Publication Date: 2024-01-28T06:48:53Z
• Authors: Xiang Liu; Zhi Yu; Shan Fang; Yong Li; Guoxing Qu; Nai-Gen Zhou; Dong-Liang Peng
• Keywords: Carbon fibers

Si-based anode materials have a relatively high theoretical specific capacity and low operating voltage, greatly enhancing the energy density of rechargeable lithium-ion batteries (LIBs). However, their practical application is seriously hindered by instability active particles electrodes caused huge swelling during cycling. How to maintain stability charge transfer network interface structure Si full challenges. To address this issue, we developed novel Si@Fe3O4/AC/CNR in-situ growing one-dimensional elastic carbon nano-ribbons wrap nanoparticles. This special can construct fast channels electron transport lithium ion diffusion, stabilize surface nanoparticles With these promising architectural features, composite possesses 1279.4 mAh/g at 0.5 A/g, superior cycling life with 80 % retention after 700 cycles. Even current 20.0 still delivers 621.2 mAh/g. The facile synthetic approach performance anodes provide insight into advanced large volume expansion for high-energy-density LIBs.