Two dimensional α-MoO3 nanosheets decorated carbon cloth electrodes for high-performance supercapacitors

The production of two dimensional (2D) layers, especially nanosheet is of significant importance to develop supercapacitors. Herein, reactive radio-frequency magnetron sputtering method is employed to the 2D alpha-MoO3 nanosheet preparations on carbon cloth substrate. As-prepared 2D alpha-MoO3 nanosheet coated carbon cloth has been characterized by XRD, UV-vis, Raman, FE-SEM, EDX techniques. Supercapacitor performance of 2D alpha-MoO(3 )nanosheet coated carbon cloth is tested from cyclic voltammetry (CV) and galvanostatic charge discharge (GCD) techniques in 1.0 M aqueous Na2SO4 electrolyte. 2D alpha-MoO3 nanosheet coated carbon cloth delivers the specific capacitance 240 F g(-1) at current density of 1.5 mA cm(-2) with capacity retention of 78.8% for 5000 cycles at 2.5 mA cm(-2 ). Compared to bare carbon cloth and alpha-MoO(3 )decorated carbon cloth at room temperature, 2D alpha-MoO3 nanosheet coated carbon cloth exhibits much higher specific capacity, superior cyclability, and good rate capability, highlighting the advantages of hierarchical nanosheet and high surface area in the MoO3 structure.