Facile synthesis of molybdenum disulfide adorned heteroatom-doped porous carbon for energy storage applications

The rising energy demand and fossil-fuel use, along with growing environmental pollution, need the creation and development of innovative, ecologically friendly, and renewable high-performance energy storage systems. The key requirements of sustainable translation of biomass waste into a cost-effective and high-performance supercapacitor have become a primary concern to overcome the existing pitfalls. The current work outlines the large-scale synthesis of greater energy density, quicker charging, and superior long-term supercapacitor electrodes using banana peel as a heteroatom-doped carbon (H-PC) precursor that is both sustainable and economical. Dried banana peel carbonized at 800 degrees C for 2 h under the argon atmosphere was homogeneously mixed 20 wt% of MoS2 by the dry-impregnation method. Few layers of MoS2-decorated H-PC (MoS2@H-PC) composite owning micro/mesoporous structure, and satisfactory surface area (210 m(2) g(-1)) was fabricated as the active electrode material to examine the electrochemical properties. MoS2@H-PC exhibited significant faradaic reactions and electrostatic adsorption due to the presence of numerous electrochemical active sites leading to a profound specific capacitance of 408 F g(-1) at a current density of 1 A g(-1). Exploiting the unique heterostructure and the synergy of nitrogen atoms, MoS2, and carbon layers, MoS2@H-PC reveals impressive cyclic stability with 90% capacitance retention beyond 10,000 cycles. This study paves the path for the future development of high energy density and robust supercapacitors from various agricultural waste products and landfills. [GRAPHICS] .

Automated summary

This study successfully synthesized supercapacitor electrodes with high energy density and long-term cyclic stability by preparing heteroatom-doped carbon from banana peel, paving the way for future development of high-performance battery materials from agricultural waste and landfills.