▎ 摘　　要

The silicon@graphene composite as anode material was prepared by a spray-drying method combined with a low temperature reduction technology. XRD results show that the composite is composed of silicon and graphene confirmed by the FT-IR and Raman spectra. SEM and TEM results reveal that the silicon@graphene powders are the spherical shape with micron in diameter and graphene sheets are enwrapped with nano-silicon particles. The silicon@graphene composite shows an improved electrochemical performance, in which the sample can show the best electrochemical performance while the mass ratio of silicon and graphene oxide reaches to 1:4, delivering a high initial charge capacity of 1298.1 mAh g(-1) at 100 mA g(-1). Moreover, the sample can also show good rate performance, which indicates that it could be used as a promising anode material for Li-ion batteries.