| 초록 |
We have demonstrated a simple hybridization of graphene-SnO2 nanocomposites for Li-ion battery anode application. Highly crystalline SnO2 nanoparticles were evenly deposited on the graphene layer, and the loading levels of SnO2 in nanocomposites were easily controlled by the initial amount of Sn precursor to investigate the optimized ratio of graphene to SnO2 for the enhanced electrochemical properties. When the loading level of SnO2 was around 70 wt% in the nanocomposites, improved capacity, reliable cycling, lower interfacial resistance and good rate capability were achieved. Our approach offers a scalable, robust synthetic route to prepare graphene-based nanocomposites through simple mixing and thermal treatment, and may be used to assemble high-performance Li-batteries. |
