Flower-like SnO2/graphene composite for high-capacity lithium storage

Flower-like SnO2/graphene composite is synthesized by a simple hydrothermal method for high-capacity lithium storage. The as-prepared products are characterized by XRD, FTIR, FESEM, TGA and Nitrogen adsorption/desorption. The electrochemical performance of the flower-like SnO2/graphene composite is measured by cyclic voltammetry and galvanostatic charge/discharge cycling. The results show that the flower-like SnO2 nanorod clusters are 800 nm in size and homogeneously adhere on graphene sheets. The flower-like SnO2/graphene composite displays superior Li-battery performance with large reversible capacity, excellent cyclic performance and good rate capability.

SEM image of (c) low-magnification of flower-like SnO2/graphene composite, (d) high-magnification of flower-like SnO2/graphene.Highlights► Flower-like SnO2/graphene composite and bare flower-like SnO2 are synthesized by a simple hydrothermal method. ► The SEM images show that the flower-like SnO2 nanorod clusters are 800 nm in size and homogeneously adhere on graphene sheets. ► This flower-like SnO2/graphene composite displays superior Li-battery performance with large reversible capacity, excellent cyclic performance and good rate capability.