Facile Synthesis and Outstanding Supercapacitor Performance of Ternary Nanocomposite of Silver Particles Decorated N/S Dual-Doped Graphene and MoS₂ Microspheres Stabilized by Graphene Quantum Dots

The ternary nanocomposite of silver particles decorated N/S dual-doped graphene and molybdenum disulfide microspheres (Ag-MoS 2 /NSG) is prepared by hydrothermal-chemical reduction method with quantum dots (GQDs) as additives oxide, sodium molybdate nitrate main raw materials. For comparison, the binary composites Ag-MoS , Ag-NSG MoS /NSG are also discussed. In addition, physicochemical electrochemical properties GQDs studied, dynamic analysis carried out. Results show that composite Ag, NSG can effectively prevent lamellar superposition agglomeration graphene, which improves specific surface area conductive composite. capacitance 1124.3 F·g −1 at 10 mV·s retention 95.2% after 10000 constant current charge/discharge loops. asymmetric button supercapacitor device assembled has a maximum energy density 82.5 Wh·kg (900 W·kg ).