Oxygen-incorporated MoS2 microspheres with tunable interiors as novel electrode materials for supercapacitors

In this work, a simple and facile one-step hydrothermal method is developed to synthesize oxygen incorporated molybdenum disulphide (O-MoS2) microspheres with tunable interiors (solid, yolk-shell and hollow microstructures) by using carbon disulfide (CS2) as soft template and sulfur source simultaneously. The synthesized O-MoS2 microspheres with enlarged interlayer spacing of ca. 9.8 angstrom show remarkable electrochemical performances as novel electrode materials for supercapacitors (SCs). Specifically, O-MoS2 hollow microsphere exhibits optimal electrochemical performances with a high specific capacitance of 744.2 F g(-1) at a current density of 1 A g(-1) and a good cycling stability with ca. 77.8% capacitance retention after 10 K continuous charge-discharge cycles at a high current density of 5 A g(-1), thus making it a promising electrode material for high-performance SCs. The excellent electrochemical performances are mainly attributed to the enlarged interlayer spacing and the reduced band gap owing to the oxygen incorporation in MoS2 and the hollow microstructure. (C) 2017 Elsevier B.V. All rights reserved.