Rational design and synthesis of SiC/TiC@SiOx/TiO2 porous core–shell nanostructure with excellent Li-ion storage performance

Abstract

Rational design and synthesis of a new silicon carbide/titanium carbide@silicon oxide/titanium dioxide (SiC/TiC@SiO_x/TiO₂) porous core–shell nanostructured material could significantly enhance the specific capacity, rate capability, and cycle stability of electrodes. The results demonstrate that the specific capacities are 387, 300, 252, 210, 174 and 151 mA h g⁻¹ at 100, 200, 500, 1000, 1500 and 2000 mA g⁻¹, respectively. The newly designed electrode still exhibits a larger specific capacity of 217 mA h g⁻¹ at 1000 mA g⁻¹ after the 1000th cycle.