Anchoring SbxOy/SnO2 nano-heterojunction on reduced graphene oxide as lithium ion batteries anodes with remarkable rate performance and excellent cycle stability

Constructing the nanometer heterojunction can enhance the surface reaction kinetics and promote the transmission of charge because of internal micro-electric fields of heterogeneous interfaces. Herein, SbxOy/SnO2 nano-heterostructures anchored on the surface of reduced graphene oxide (SbxOy/SnO2/rGO) were prepared by a simple one-step solvothermal method. The SbxOy/SnO2/rGO used as anode for lithium ion batteries possesses remarkable rate performance, high discharge, and charge specific capacities of 518.6 and 515.3 mA h g(-1) after 1000 cycles at 4000 mA g(-1), respectively, as well as excellent cycle stability (the capacity loss rate per cycle is only 0.00379%). The excellent electrochemical properties of the SbxOy/SnO2/rGO material can be attributed to the successful builds of nano-heterostructures.