Monolayer MoS₂–Graphene Hybrid Aerogels with Controllable Porosity for Lithium-Ion Batteries with High Reversible Capacity

Monolayer MoS₂ nanosheets (NSs) are promising anode materials for lithium-ion batteries because all redox reactions take place at the surface without lithium-ion diffusion limit. However, the expanded band gap of monolayer MoS₂ NSs (∼1.8 eV) compared to their bulk counterparts (∼1.2 eV) and restacking tendency due to the van der Waals forces result in poor electron transfer and loss of the structure advantage. Here, a facile approach is developed to fabricate the MoS₂–graphene aerogels comprising controlled three-dimensional (3D) porous architectures constructed by interconnected monolayer MoS₂–graphene hybrid NSs. The robust 3D architectures combining with the monolayer feature of the hybrid NSs not only prevent the MoS₂ and graphene NSs from restacking, but also enable fast electrode kinetics due to the surface reaction mechanism and highly conductive graphene matrix. As a consequence, the 3D porous monolayer MoS₂–graphene composite aerogels exhibit a large reversible capacity up to 1200 mAh g^–1 as well as outstanding cycling stability and rate performance, making them promising as advanced anode materials for lithium-ion batteries