Electrochemical exfoliated graphene-encapsulated SiO-TiO ₂ composites as anode materials for Li-ion batteries

Silicon-based anode materials have garnered significant attention due to their high specific capacity. However, their practical application is hindered by huge volume changes and low electronic conductivity. In this work, the industrial SiO powder is coated by TiO 2 , generating from TiH 2 , via ball milling and high-temperature heat treatment. Additionally, we in-situ attach the SiO-TiH 2 composite to graphene prepared by electrochemical exfoliate methods. Through ultrasonic and centrifugal processing, we successfully construct SiO-TiH 2 adhered to the graphene layered structure (Gr). The SiO-TiH 2 @Gr composite exhibits excellent cycling performance, maintaining a discharge specific capacity of 703.5 mAh g −1 after 160 cycles, with a capacity retention rate of 60%. This work provides practical insights for enhancing the cycling stability of SiO anode materials.