Research Review on Synthesis of Bio-waste Graphene Quantum Dots for Super Capacitor Applications

This comprehensive study delves into the fabrication of Graphene Quantum Dots (GQDs) sourced from organic waste for their application in supercapacitors, addressing the growing demand for sustainable and effective energy storage solutions. GQDs exhibit distinctive characteristics, including remarkable surface area and superb conductivity, offering considerable potential for augmenting supercapacitor efficiency. Various methodologies for GQD synthesis, such as hydrothermal and solvothermal techniques, chemical exfoliation, carbonization, pyrolysis, as well as microwave-assisted processes, are meticulously examined alongside diverse characterization methodologies aimed at assessing GQD attributes. The utilization of organic waste-derived GQDs showcases significant advancements in enhancing specific capacitance and endurance in supercapacitor electrodes. Nevertheless, scalability hurdles and material purity concerns persist, necessitating further research endeavors. Future endeavors are directed towards elevating energy density, prolonging cycle life, and optimizing cost-efficiency to expedite the integration of organic waste-derived GQDs into mainstream energy storage applications.