One-step hydrothermal synthesis of few-layered metallic phase MoS2 for high-performance supercapacitors

In recent years, molybdenum disulfide (MoS 2 ) has gained significant attention in the scientific community. Fewlayered MoS 2 demonstrates unique properties and potential applications. However, the synthesis of few-layered and high-purity 1T-MoS 2 is still a challenge. In this study, we successfully employed a hydrothermal method to synthesize few-layered and high-purity 1T-MoS 2 . The purity of the material is controlled by a combination of sodium borohydride and ethanol. Notably, the few-layered 1T-MoS 2 exhibits exceptional performance as a supercapacitor, including the high specific capacitance (250.3 F g -1 at a current density of 1 A g -1 ) and excellent long-trem cycling stability (90.7 % after 5000 cycles). Meanwhile, the asymmetric device assembled by 6-FL-1TMoS 2 and active carbon on carbon cloths exhibits excellent fiexibility and high energy and power density (23.1 mu Wh cm -2 at 600 mu W cm -2 , 55 mu Wh cm -2 at 12000 mu W cm -2 ). This work provides valuable insights into the synthesis of few-layered and high-purity 1T-MoS 2 , opening up new avenues for further research and applications.