Step-by-step assembly preparation of core–shell Si-mesoporous TiO2 composite nanospheres with enhanced lithium-storage properties

Abstract

Core–shell structured Si-mesoporous TiO₂ (Si@mTiO₂) composite nanospheres are designed and prepared via a step-by-step assembly method. Si@mTiO₂ exhibit excellent lithium-storage properties when used as anode materials in lithium ion batteries. The reversible specific capacity is maintained at as high as 700 mA h g⁻¹ with no capacity decay even after 200 cycles at 1 A g⁻¹.