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.