Zeolitic imidazolate framework (ZIF)-derived porous carbon materials for supercapacitors: an overview

Abstract

The present analysis focuses on the synthetic methods used for the application of supercapacitors with various mysterious architectures derived from zeolitic imidazolate frameworks (ZIFs).

Metal–Organic Framework Based 1D Nanostructures and Their Superstructures: Synthesis, Microstructure, and Properties

“…MOFs NPs with different morphologies (i.e., sphere, rods, sheets) have previously been tested as electrodes in two types of SCs differing in their charge-storing methods: namely, electrical double-layer capacitors (EDLCs) and pseudocapacitors (see Figure ). − While the energy in EDLCs is stored by the electrostatic adsorption of charges on the surface of the electrodes, the energy in pseudocapacitors is stored by the reversible Faradaic redox reaction taking place at the surface of the electrodes. ,, The controllable porous structure and high surface area of MOFs provide a significant advantage to enhance the electrolyte penetration, while the presence of redox-active metal centers has the potential to increase pseudocapacitance. , Note that the vast majority of MOFs exhibit poor electron conductivity, which is the main limitation for the performance of SCs. However, an alternative strategy consists of integrating intrinsically conductive MOFs , such as the Cu-CAT MOF as the sole electrode material into EDLC SCs .…”

“…Representation of (a) electrical double-layer capacitors (EDLCs) and (b) pseudocapacitors (where M is a metal cation). Adapted with permission from ref . Copyright 2020 The Royal Society of Chemistry.…”

“…100−103 While the energy in EDLCs is stored by the electrostatic adsorption of charges on the surface of the electrodes, the energy in pseudocapacitors is stored by the reversible Faradaic redox reaction taking place at the surface of the electrodes. 100,101,104 The controllable porous structure and high surface area of MOFs provide a significant advantage to enhance the electrolyte penetration, while the presence of redox-active metal centers has the potential to increase pseudocapacitance. 100,101 Note that the vast majority of MOFs exhibit poor electron conductivity, which is the main limitation for the performance of SCs.…”

Recent progress in water-splitting and supercapacitor electrode materials based on MOF-derived sulfides

“…Other reviews have comprehensively highlighted the perspectives of materials derived from MOFs for supercapacitors. 4,5,11 For example, Chen et al 12 reported the preparation methods, morphology, and performance of MOF-based derivatives in supercapacitors, while Ahmad et al 11 reviewed the use of zeolitic imidazolate framework (ZIF)-derived porous carbon materials for the same purpose. Complementarily, Ye et al 13 recently reported an overview on the progress in pristine MOFs, MOF composites, and their derivatives for next-generation rechargeable batteries including lithium–sulfur batteries, lithium–oxygen batteries, sodium-ion batteries, potassium-ion batteries, Zn-ion batteries, and Zn–air batteries.…”

Zeolitic Imidazole Framework Sacrificial Template-Assisted Synthesis of NiCoP Nanocages Doped with Multiple Metals for High-Performance Hybrid Supercapacitors

“…Zeolitic imidazole frameworks (ZIFs) are a subclass of metal−organic frameworks (MOFs) and have received considerable research interest. 30 In particular, zeolitic imidazole framework-67 (ZIF-67), which consists of cobalt metal nodes and 2-methylimidazole linkers, can be used as a sacrificial template to prepare a wide range of materials, including porous carbons, cobalt-based oxides, LDHs, sulfides, phosphides, and selenides. 31 Moreover, by adjusting the experimental conditions, various nanostructures with high surface areas can be obtained such as nanocages, 32 nanorods, 33 and nanoflowers.…”