A 3D pore-nest structured silicon–carbon composite as an anode material for high performance lithium-ion batteries

A novel silicon–carbon composite with a 3D pore-nest structure denoted as Si@SiO_x/CNTs@C was prepared and studied, and the capacity of a Si@SiO_x/CNTs@C composite anode can be maintained at above 1740 mA h g⁻¹ at a current density of 0.42 A g⁻¹ after 700 cycles.