One-Pot Hydrothermal Synthesis of Ternary 1T-MoS2/Hexa-WO3/Graphene Composites for High-Performance Supercapacitors

A new ternary composite of 1T-molybdenum disulfide, hexagonal tungsten trioxide, and reduced graphene oxide (M-W-rGO) is synthesized by using a one-pot hydrothermal process. The synergetic effect of 1T-MoS 2 and hexa-WO 3 nanoflowers improves the electrochemical performance for supercapacitors by inducing additional active sites and hexagonal tunnels, respectively, which lead to high storage capacity and easy transfer of electrolyte ions. The ternary M-W-rGO composite has a high specific capacitance of 836 F g −1 at 1 A g −1 , which is nearly twice that of binary composites of M-rGO and W-rGO with high capacitance retention of 86.35 % after 3000 cycles at a high current density of 5 A g −1 . This study provides a new ternary composite that can be used as an electrode material for high-performance supercapacitors. Graphical The flower of supercapacitors : 1T-MoS 2 and hexa-WO 3 nanoflowers are grown on a 3D network of reduced graphene oxide by using a one-pot hydrothermal process. The hexagonal tunnel structure of WO 3 and 1T conducting phase of MoS 2 provide additional active sites, high storage capacity, and easy electronic transportation for high-performance supercapacitor applications.