Research on the preparation and lithium storage mechanism of MoS2@C

The limited van der Waals force between MoS2 and the graphene substrate in MoS2/graphene heterojunctions can lead to problems such as partial aggregation of MoS2 nanosheets, uncontrollable geometric structures, and loose binding of the robust scaffold. To address these issues, this study explored a strategy of coating MoS2 with dopamine and carbonizing it under microwave-assisted conditions to optimize the lithium storage structure. The research results showed that MoS2/polydopamine mass ratio of 1:1 and microwave radiation power of 700 W were the optimal process conditions for the preparation of MoS2@C composite materials. At this point, MoS2 was completely embedded in the carbon framework, and the carbon layer provided good electrical conductivity and could suppress the structural changes of MoS2. The MoS2@C structure exhibited excellent adsorption performance for Li+, which was beneficial for the storage and transfer of Li + during charge and discharge cycles.