Performance of MoS₂-reduced graphene oxide nanocomposites in supercapacitors and in oxygen reduction reaction Available to Purchase

Considering the desirable attributes of nanosheets of molybdenum disulfide (MoS₂) and reduced graphene oxide (RGO), the authors prepared composites of the two and investigated their use in supercapacitors. The best results were obtained with the MoS₂:RGO (1:2) composite, which exhibited a specific capacitance of 416 F/g at 5 mV/s. They also studied the oxygen reduction reaction (ORR) activity of MoS₂–RGO composites. Among the MoS₂–RGO nanocomposites, the 1:2 composite showed the best ORR activity, since the attributes for a good supercapacitor performance are reported for this property as well. The excellent performance of the MoS₂–RGO (1:2) composite is attributed to the combined effect of the good electrical conductivity of RGO and the unique surface properties of MoS₂ as well as of RGO. This study indicates that good supercapacitor performance and ORR activity are governed by common factors.