MoS2–graphene nanosheet–CNT hybrids with excellent electrochemical performances for lithium-ion batteries

Abstract

A flower-like MoS₂–graphene nanosheet–CNT (MoS₂–GNS–CNT) nanocomposite is successfully prepared by a facile hydrothermal process for fast lithium storage. The introduction of a graphene backbone and CNTs prevent the growth of MoS₂, resulting in the formation of few layered nano-MoS₂ (about 5–10 nm). The CNTs are intimately embedded in the composites to form highly conductive 3D networks, which serve as a highly conductive substrate leading to the high-rate performance. In addition, CNTs in the unique hybrid nanostructure prevent the restacking of GNS. The MoS₂–GNS–CNT composite exhibits superior rate capability (300 mA h g⁻¹ at 20 A g⁻¹) and ultralong cyclability (728 mA h g⁻¹ at 5 A g⁻¹ after 1000 cycles). We believe that our strategy could be broadly applicable for the preparation of other transition metal dichalcogenide (TMD) materials with great promise for various applications.