Synthesis of MoO3 nanobelts/reduced graphene oxide by one-step hydrothermal method and the corresponding electrochemical properties

Abstract

To improve the energy storage performance of MoO3 as the supercapacitor electrode materials, the MoO3 nanoribbon/reduced graphene oxide (RGO) composites were synthesized by one-step hydrothermal method. The phase structure, microstructure, and electrochemical properties of the composites were characterized by X-ray diffraction analysis, scanning electron microscopy, Fourier transform infrared spectroscopy, cyclic voltammetry curves, and constant current charge discharge curves. The results show that, the MoO3 nanoribbon/RGO composites are successfully fabricated by the one-step hydrothermal method. Encouragingly, the specific capacitance of the composite materials is increased by 17.5%, compared with that of pure MoO3 as 228 F∙g‒1. Furthermore, the MoO3 nanoribbons are wrapped by RGO or attached to the surface of RGO in the composites, enhancing the electrical conductivity and structure stability, and then improving the electrochemical performance.

Keywords

• molybdenum trioxide
• hydrothermal method
• graphene oxide
• supercapacitor
• specific capacitance