One-pot synthesis of molybdenum disulfide–reduced graphene oxide (MoS₂-RGO) composites and their high electrochemical performance as an anode in lithium ion batteries

A simple, effective, and ultra-fast one-pot route is developed to synthesize molybdenum disulfide (MoS₂)-reduced graphene oxide (RGO) composites. The method to tightly anchor MoS₂ particles on the surface of RGO includes simultaneous reduction of graphene oxide (GO) and heterogeneous nucleation and growth of MoS₂ on the RGO surface in supercritical ethanol (scEtOH) medium. The synthesized MoS₂-RGO composites have a mesoporous structure with high porosity. The MoS₂-RGO composites show an enhanced electrochemical performance due to their unique nanostructure and the synergetic effect of MoS₂ and RGO nanosheets when compared to those of compared with bare MoS₂ and bare RGO. The MoS₂-RGO composite with a MoS₂ loading of 74.0 wt% can deliver a high reversible discharge capacity up to 1102 mAh g⁻¹ at a rate of 0.05 A g⁻¹ after 80 cycles and an excellent cycling stability of 951 mAh g⁻¹ at 0.05 A g⁻¹ after 140 cycles.