Preparation of Carbon Nanotube-Coated MoS₂ Lithium Anode Material and its Performance Study

Molybdenum disulfide (MoS₂), as an excellent two-dimensional layered material, is an ideal candidate for the anode of lithium-ion batteries. However, the stacking nature of MoS₂ 2D layered structure, volume expansion during charging and discharging, and its own low conductivity limit its development in lithium-ion batteries. In this work, we synthesized MoS₂@C composites by compositing MoS₂ with glucose, an organic carbon source. Experiments showed that the carbon nanotubes formed after carbonization of different contents of glucose had a significant effect on the hydrothermal growth of the presence of MoS₂, and we synthesized MoS₂@C composites grown in the inner layer of carbon nanotubes by regulating the content of glucose, which had a high specific capacity, and better structural stability, less specific capacity decay during charging and discharging. When used as an anode material for lithium-ion batteries, it maintains a specific capacity of 680.7 mAhg⁻¹ after 100 cycles at a current density of 0.2 Ag⁻¹, and a reversible specific capacity of 580.9 mAhg⁻¹ after 1000 cycles at a current density of 1 Ag⁻¹. Meanwhile, the sulfidation reaction process of MoS₂@C in the hydrothermal process was analyzed to provide a new path for the rational preparation of MoS₂ composites with carbon.