MOFs-Graphene Composites Synthesis and Application for Electrochemical Supercapacitor: A Review

Abstract

Today’s world requires high-performance energy storage devices such as hybrid supercapacitors (HSc), which play an important role in the modern electronic market because supercapacitors (Sc) show better electrical properties for electronics devices. In the last few years, the scientific community has focused on the coupling of Sc and battery-type materials to improve energy and power density. Recently, various hybrid electrode materials have been reported in the literature; out of these, coordination polymers such as metal-organic frameworks (MOFs) are highly porous, stable, and widely explored for various applications. The poor conductivity of classical MOFs restricts their applications. The composite of MOFs with highly porous graphene (G), graphene oxide (GO), or reduced graphene oxide (rGO) nanomaterials is a promising strategy in the field of electrochemical applications. In this review, we have discussed the strategy, device structure, and function of the MOFs/G, MOFs/GO, and MOFs/rGO nanocomposites on Sc. The structural, morphological, and electrochemical performance of coordination polymers composites towards Sc application has been discussed. The reported results indicate the considerable improvement in the structural, surface morphological, and electrochemical performance of the Sc due to their positive synergistic effect. Finally, we focused on the recent development in preparation methods optimization, and the opportunities for MOFs/G based nanomaterials as electrode materials for energy storage applications have been discussed in detail.

Mini Review on Synthesis, Characterization, and Application of Zeolite@MOF Composite

“…In the solvothermal synthesis method of zeolite@MOF composites, zeolites were synthesized through a hydrothermal method, and the MOFs were growth solvothermally over the presynthesized zeolite surface (Scheme 2). However, the method requires high temperatures and more time to complete the reaction or crystal growth during synthesizing of composite materials [37][38][39].…”

Intrinsically Conducting Polymer Composites as Active Masses in Supercapacitors

“…Metal–organic frameworks (MOFs) and their composites have been considered as active masses in supercapacitor electrodes [ 239 , 240 , 241 , 242 ]; combined with ICPs, the obtained composites were examined for various electrochemical applications [ 243 ]. The poor electronic conductivity of MOFs was noticed as a major hindrance to their use in a supercapacitor electrode; forming composites [ 156 , 244 , 245 , 246 ], including ICPs, is an obvious solution [ 77 , 242 ]. Only a few experimental observations focused on material science aspects were recorded.…”

A facile morphology tunable strategy of Zn-MOF derived hierarchically carbon materials with enhanced supercapacitive performance through the solvent effect

“…14 However, they have limitations such as the higher production cost of graphene, limited energy storage capacity of activated carbon and small specific surface area (∼500 m 2 g −1 ) of carbon nanotubes. 15,16 It has been confirmed that pore size is the key factor affecting the electrochemical performance of carbon-based materials. [17][18][19] Too many micropores will hinder the diffusion and mass transfer of the electrolyte, and the existence of macropores will lead to the disintegration of the skeleton material.…”