Design and exploration of metal-organic framework, metal oxide, and sulfide composites for supercapacitor applications

Abstract

This thesis reports the exploration of diverse charge storage mechanisms (EDLC, pseudo, battery) and their combination employing a range of materials for efficient energy storage devices using various electrode materials based on metal-organic framework (MOF), metal oxide, sulfide composites, and high entropy prussian blue analog (HEPBA) for supercapacitor application. The investigation revolves around the synthesis and characterization of new electrode materials based on metal-organic frameworks (MOFs), metal oxides, sulfide composites, and high entropy prussian blue analog (HEPBA). One key aspect explored in this study is the synergistic effect achieved by combining Cu (II) metal-organic frameworks (Cu-MOF) with carbonaceous materials such as reduced graphene oxide (rGO) and carbon nanotubes (CNTs). This composite electrode demonstrates a unique blend of pseudocapacitive and EDLC behaviors, leading to enhanced capacitive performance and cyclic. Further, the development of binder-free NiO-rGO composite electrodes highlights a remarkable combination of battery-like characteristics and EDLC behavior.