Facile Synthesis of SiO₂/C Composite and Its Application as Anode Material for Lithium Ion Batde

Abstract

SiO₂/C composite as an anode material of lithium ion batteries was prepared by a facile synthesis method using raw materials of polyaniline and silicon dioxide. The SiO₂/C composite shows the higher reversible capacity of 533.4 mAh g⁻¹ after 100th cycles with good cycling stability. This improvement of electrochemical performance of the synthesized composite is benefit from the carbon coated on the SiO₂ nanospheres, which improves the electrical conductivity and restrains the volume variation during the lithiation and delithiation process. Due to the superior electrochemical performance, the SiO₂/C composite prepared via facile synthesis could be promising as anode materials with high capacity, low-cost for lithium-ion batteries.