Binder‐Free MOF‐Based and MOF‐Derived Nanoarrays for Flexible Electrochemical Energy Storage: Progress and Perspectives

Abstract

The fast development of Internet of Things and the rapid advent of next‐generation versatile wearable electronics require cost‐effective and highly‐efficient electroactive materials for flexible electrochemical energy storage devices. Among various electroactive materials, binder‐free nanostructured arrays have attracted widespread attention. Featured with growing on a conductive and flexible substrate without using inactive and insulating binders, binder‐free 3D nanoarray electrodes facilitate fast electron/ion transportation and rapid reaction kinetics with more exposed active sites, maintain structure integrity of electrodes even under bending or twisted conditions, readily release generated joule heat during charge/discharge cycles and achieve enhanced gravimetric capacity of the whole device. Binder‐free metal‐organic framework (MOF) nanoarrays and/or MOF‐derived nanoarrays with high surface area and unique porous structure have emerged with great potential in energy storage field and been extensively exploited in recent years. In this review, common substrates used for binder‐free nanoarrays are compared and discussed. Various MOF‐based and MOF‐derived nanoarrays, including metal oxides, sulfides, selenides, nitrides, phosphides and nitrogen‐doped carbons, are surveyed and their electrochemical performance along with their applications in flexible energy storage are analyzed and overviewed. In addition, key technical issues and outlooks on future development of MOF‐based and MOF‐derived nanoarrays toward flexible energy storage are also offered.

Deriving multi-metal nanomaterials on metal–organic framework platforms for oxygen electrocatalysis

“…In the realm of one-dimensional structures, nanotubes and nanorods present unique mechanical, electronic, and optical properties distinct from bulk materials. 110,111 However, the synthesis of one-dimensional MOF precursors for selftemplating methods remains limited. Despite this constraint, the distinctive features of one-dimensional nanostructures make them promising candidates for specialized applications requiring tailored material properties.…”

Bimetallic porphyrin MOF derived CuIn particles/carbon composites as ideal microwave absorbers

“…10,11 In general, due to favorable porosity and semiconductor properties, pristine MOFs are commonly applied in the fields of adsorption, gas separation and photocatalysis. 12,13 In recent years, the preparation of metal/carbon nanocomposites using metal–organic framework (MOF) materials as starting templates has received widespread attention on account of their highly tunable microstructures and elemental compositions, 14,15 mainly regarding energy storage, 16 electrocatalysis 17 and batteries. 18 Importantly, these customizable MOF-based derivatives also demonstrated prominent advantages in the high-performance microwave absorption materials field.…”

Layered double hydroxide-based electrode materials derived from metal–organic frameworks: synthesis and applications in supercapacitors

“…20,21 Numerous LDH-based electrode materials derived from MOFs, including pristine LDH powders, LDH composites, and LDH-based arrays, have been extensively investigated. [22][23][24] In this regard, a summary of the recent advances in this field is urgent to inspire more exploration, but it is still rare in the literature.…”