MnO2@MoS2/RGO hollow structure as high-performance supercapacitor electrode materials

Reduced graphene (RGO) has garnered substantial attention due to its specific surface area and electrical con-ductivity as a material for cathodes. However, RGO cannot meet the demand for new energy because of its low capacitance, which has the problem of RGO lamellar agglomeration. Herein, MnO2@MoS2/RGO electrode ma-terial composite is prepared by using MoS2/RGO as the conductive substrate and MnO2 as the active substance particles. Electrochemical performance tests showed that the MnO2@MoS2/RGO composite electrode has excellent specific capacitance and stable cyclic stability. The prepared nanocomposite material has a capacitance of 743 F g-1 of 1 A g-1, which is greater than that of MnO2 (102 F g-1). Specific energy and specific power were 31.22 Whkg- 1 and 362.51 Wkg- 1 of the MnO2@MoS2/RGO material. The cycle stability reaches 88.5 % after 5000 cycles. Due to its excellent electrochemical properties, it has become a hot subject in the research of materials for supercapacitor electrodes.

Automated summary

The MnO2@MoS2/RGO composite electrode material is prepared by using MoS2/RGO as the conductive substrate and MnO2 as the active substance particles. The composite electrode has excellent specific capacitance and stable cyclic stability, which can meet the demand for new energy. With a cycle stability of 88.5% after 5000 cycles, it has become a hot topic in the research of materials for supercapacitor electrodes.