Hydrothermal synthesis of an MoS2/MnO2 nanocomposite: a unique 3D-nanoflower/1D-nanorod structure for high-performance energy storage applications

Abstract

In this study, an MoS2/MnO2 nanocomposite electrode with a novel 3D nanoflower/1D nanorod architecture is effectively synthesized using a straightforward, cost-effective hydrothermal process. The addition of the 1D MnO2 nanorod offers a structural backbone, while the 3D MoS2 nanoflower generates additional reactive active sites. The hybrid structure makes fast electron and ion movement possible, which also increases the capacity for charge collection. This leads to 199.12 F g−1 specific capacitance at 40 mA g−1 in a designed 3D-1D MoS2/MnO2(6 wt%) electrode and exceptional rate capability with a tremendous cycling life (95% capacitance retention after 10 000 cycles). This discovery paves the way for the low-cost and straightforward construction of a hierarchical nanocomposite electrode with improved charge storage and electrical conductivity in energy storage applications like supercapacitors.