Challenges and Opportunities: Conducting Polymer‐Graphene based Nanocomposites of Metal Oxides and Metal Sulfides for Supercapacitors

Abstract

Supercapacitor's demand for hybrid vehicles, portable electronic gadgets, and high‐power applications is increasing unexpectedly. However, supercapacitors′ inadequacies (i. e., inflated costs, poor energy density, erratic cycle life) need to be addressed by introducing novel composite materials and developing facile synthesis techniques which can give them high surface area and improved electrochemical stability. Moreover, hybrid supercapacitor electrodes based on ternary composites should be designed to broaden their application range and to deal with the challenges. The primary aim of this review is to explore the recent advances in the field of hybrid supercapacitors to address the challenges in this field. Specifically, we have focused on ternary nanocomposites comprising Graphene‐Conducting Polymers‐Metal Oxides (G‐CPs‐MOs) and Graphene‐Conducting Polymers‐Metal Sulfides (G‐CPs‐MSs). Our investigations centred around exploring various synthesis techniques, the surface morphology of composites and analysing the reported electrochemical evaluations of supercapacitor electrodes to highlight the potential prospects and challenges they present.

Review and Outlook of Zinc Sulfide Nanostructures for Supercapacitors

“…A significant number of electrode materials is presently available for supercapacitors, e.g., carbon nanomaterials (graphene, carbon nanotubes, etc. ), conducting polymers, metal chalcogenides, layered double hydroxides (LDHs), metal oxides (MOs), metal sulfides (MSs), metal phosphates, metal–organic frameworks (MOFs), covalent–organic frameworks (COFs), MXenes, and their composites. , The selection and design of electrode materials depend on the specific requirements of the application based on various parameters, including desired energy density, power density, operating voltage, and cost considerations. Researchers and engineers continue to explore novel materials and fabrication techniques to enhance the performance and scalability of supercapacitors for energy storage applications, including electric vehicles, energy systems, and renewable and portable electronics.…”