Composites of Reduced Graphene Oxide and Fe₂O₃ Nanoparticles Anchored on MoS₂ Nanosheets\nfor Lithium Storage

Abstract

Along\nwith the progress of electric vehicles and hybrid electric\nvehicles, high-performance lithium-ion batteries are needed urgently.\nHerein, we design and prepare a Fe₂O₃/MoS₂/rGO composite in which the unique three-dimensional heterostructure\neffectively alleviates the volumetric change during charge/discharge\nprocesses and enhances the electronic conductivity of an active material,\nthus improving the reversible capacity of a battery. Under a low current\ndensity (200 mA g^–1), Fe₂O₃/MoS₂/rGO delivers a high discharge capacity of 906 mAh\ng^–1 after 100 cycles. Even at a high current density\n(1000 mA g^–1), the discharge capacity reaches 711\nmAh g^–1 after 500 cycles. In addition, Fe₂O₃/MoS₂/rGO has also a good rate performance\n(608 mAh g^–1 at 1500 mA g^–1).\nThe experimental results show that the synthesis of Fe₂O₃/MoS₂/rGO is an effective approach to prepare\nanode materials that possess the outstanding electrochemical properties\nfor lithium storage.