Laser-induced ZnxMnOx-rGO-C@LIG materials doped with diesel distillate for Zn-ion hybrid supercapacitors

Abstract

Treating diesel distillates containing polycyclic aromatic hydrocarbons (PAHs) not only reduces environmental pollution but also enhances the added value of diesel products, achieving resource recycling. In this study, an efficient and eco-friendly laser-induced method was employed to successfully synthesize a novel cathode hybrid material with a fluffy, porous structure (Zn_xMnO_x-rGO-C@LIG). By incorporating reduced graphene oxide (rGO) and diesel distillates into Zn_xMnO_x, the material’s electrical conductivity and surface area were significantly improved, thereby greatly boosting the performance of Zn-ion batteries (ZIBs). Furthermore, this work developed a Zn-ion hybrid supercapacitors (Zn-HSCs) device that combines ZIBs with supercapacitors, using an aqueous electrolyte to expand the voltage window. At a current density of 0.2 mA cm⁻², the Zn-HSCs achieved a specific capacitance of 806.3 mF cm⁻². As a novel energy storage device, Zn-HSCs exhibit advantages such as being non-toxic, with high power density and energy density.