Antimony Selenide Nanorods Decorated on Reduced Graphene Oxide with Excellent Electrochemical Properties for Li-Ion Batteries

A promising anode material for lithium-ion batteries (LIBs) consisting of Sb 2 Se 3 nanorods and reduced graphene oxide (rGO) sheets has been prepared by an effective solvothermal approach. The synergetic effect between Sb 2 Se 3 nanorods and rGO matrix provides not only high conductivity paths and strong electron contact interface, but also alleviates the volume change of Sb 2 Se 3 nanorods, resulting in excellent lithium-storage performance. When tested as an anode material for LIBs, a high capacity of 868.30 mAh g −1 can be retained after 100 cycles at 200 mA g −1 . Even at 2000 mA g −1 , a satisfactory capacity of 430.40 mAh g −1 after long 550 cycles can be delivered. Ex situ X-ray diffraction study suggests that the Sb 2 Se 3 /rGO composite follows the combined Li + intercalation, conversion reaction and alloying reaction mechanism. These features suggest the Sb 2 Se 3 /rGO composite a viable choice for application as an anode material in high-performance LIBs.