Synthesis of micro-sized SnO2@carbon hollow spheres with enhanced lithium storage properties

Abstract

Uniform and stable micro-sized SnO₂ hollow spheres are prepared by templating against polystyrene microspheres. After being coated with a thin layer of amorphous carbon, the as-obtained SnO₂@carbon hollow microspheres are shown to exhibit improved lithium storage properties, delivering a reversible capacity of 570 mA h g⁻¹ after 50 cycles at a high current density of 400 mA g⁻¹.