Metal–Organic Frameworks Constructed from Iron‐Series Elements for Supercapacitors

Abstract

Iron‐series (Fe, Co, and Ni) containing metal–organic frameworks (MOFs) have gained great concern in supercapacitors (SCs) because of their tailorable architectures, multiple redox‐active sites, and intriguing properties. Given the importance of porosities in MOFs for charge transmission, an essential assessment of their designs, preparation methods, and engineering technologies is strongly required to further explore and optimize SCs. Through empowering conductive backbones and redox‐active centers, iron‐series containing MOF‐based electrodes have made outstanding achievements recently. This review aims to summarize these core reports on iron‐series containing MOFs. Correspondingly, the design strategy, the reason for compositing, the strategy of introducing heteroatoms, and the current divergences on structural alteration mechanisms are discussed. Potential bottleneck issues and coping strategies are also perspectively discussed to guide future optimization.

Advances in pseudocapacitive and battery-like electrode materials for high performance supercapacitors

“…[309][310][311][312][313][314] A few review articles have already focused on the energy storage applications of MOFs and MOF-derived electrode materials. [315][316][317][318][319][320][321][322][323][324] The electrochemical performances of some of the most recently developed MOF-derived metal oxides are summarized in Table 1.…”

Approaches to Enhancing Electrical Conductivity of Pristine Metal–Organic Frameworks for Supercapacitor Applications

“…Moreover, compared to 2D c-MOFs, 3D c-MOFs can potentially own a higher specific surface area, more active sites, and a higher packing density. [146] Hence, they are expected to deliver higher capacitance. However, the related research work is only at a very early stage.…”

Controlled synthesis of a cobalt-organic framework: hierarchical micro/nanospheres for high-performance supercapacitors

“…[5][6][7] MOFs possess abundant metal centers that facilitate the occurrence of reversible faradaic reactions. [8][9][10] Additionally, the large specific surface area enables MOFs to effectively adsorb ions from the electrolyte, which is beneficial for generating a large electrical doublelayer capacitance. 11,12 However, the low electrical conductivity in most MOFs significantly limits their application as electrode materials of supercapacitors.…”