Fabrication and enhanced supercapacitance of hollow nanostructured MoS₂ prepared by a CATB-assisted hydrothermal process

Supercapacitors composed of MoS₂ typically suffer from inferior cycling stability because of aggregation and pulverization of the active particles during cycling. In order to alleviate volume expansion of the active particles and restrain aggregation and pulverization during cycling, hollow MoS₂ nanomaterials are synthesized by a simple hydrothermal method and the structure and supercapacitance characteristics are studied. The nanostructured MoS₂ particles, which has a hexagonal phase without impurities, has a diameter between 0.5 and 2 µm and contains many irregular nanosheets manifesting as a flower-like structure with a thickness of several nanometers. As the electrode in a supercapacitor, the hollow nanostructured MoS₂ shows excellent capacitance characteristics including good cycling ability.