Facile Synthesis of Ultrasmall SnO2/Sn Nanoparticles Grown on the N-Doped Carbon Framework as a Long-Life Anode Material

The development of SnO2-based negative materialspossessinga long cyclic life is troubled by their huge volume change in theLi(+) insertion and detachment process. In our study, theSnO(2)/Sn/NC composite was successfully prepared by an uncomplicatedand controllable route. The ultrasmall SnO2/Sn nanoparticlesare fixed on the N-doped carbon framework, which prominently alleviateits vast volume variation and improve its electrochemical reactionkinetics. The above-mentioned feature of SnO2/Sn/NC endowsit with an exceptional cyclic lifespan and good rate capability. Whenemployed as the negative electrode for the Li-ion battery at 1.0 Ag-1, it releases a competent discharge capacityof 344 mAh g(-1) at the 995th cycle. New dawn wouldbe brought by the investigation of the synthesis and utilization ofSn-based compounds.