Abstract:
A few-layer of MoS
2 nanosheets (F-MoS
2) was prepared from natural molybdenite by Na
+ ion-assisted liquid phase peeling method. The results showed that the thickness of F-MoS
2 nanosheets obtained by peeling was about 1.1-1.5 nm, the number of layers corresponding to MoS
2 was 2-3 layers. It was confirmed by electrochemical performance tests that the specific capacitance of F-MoS
2 was 73.7 F/g at a current density of 0.25 A/g, which was much higher than that of unstripped molybdenite (9.2 F/g) and commercial MoS
2 (19.6 F/g), the significantly increased capacitance of F-MoS
2 was mainly attributed to its fully exposed active surface. This research confirms that F-MoS
2 obtained through Na
+ ion-assisted liquid phase peeling method was a very promising class of energy storage materials.