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production of a two-dimensional molybdenum disulfide/graphene hybrid nanosheet anode for lithium-ion batteries. | LitMetric
A solvent-free, low-cost, high-yield and scalable single-step ball milling process is developed to construct 2D MoS/graphene hybrid electrodes for lithium-ion batteries. Electron microscopy investigation reveals that the obtained hybrid electrodes consist of numerous nanosheets of MoS and graphene which are randomly distributed. The MoS/graphene hybrid anodes exhibit excellent cycling stability with high reversible capacities (442 mA h g for MoS/graphene (40 h); 553 mA h g for MoS/graphene (20 h); 342 mA h g for MoS/graphene (10 h)) at a high current rate of 250 mA g after 100 cycles, whereas the pristine MoS electrode shows huge capacity fading with a retention of 37 mA h g at 250 mA g current after 100 cycles. The incorporation of graphene into MoS has an extraordinary effect on its electrochemical performance. This work emphasises the importance of the construction of the 2D MoS/graphene hybrid structure to prevent capacity fading issues with the MoS anode in lithium-ion batteries.
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