Lithium-Ion Storage Performance of Sn/C Composites as an Anode of Lithium-Ion Battery

In order to avoid the volume expansion of Sn during charge and discharge process, taking into account the advantages of low cost and wide distribution of biomass materials, using it as a precursor, which can effectively prevent the volume expansion of lithium intercalation, maintain structural stability and ensure its electrochemical performance. In this paper, Sn nanoparticles were uniformly anchored in carbon tubes to form Sn/C composites by chemical reduction method. The Sn/C composite (the mass ratio of Sn:C was 2:1) showed that the initial discharge capacity reached 1581.4 mAh/g, and the initial coulomb efficiency was 56.1% at 0.1 A/g. After 200 cycles, the specific discharge capacity remained 440.6 mAh/g, and the capacity retention rate was 55.1% (compared to the 10th cycle).