Construction of hierarchical layered hydroxide grown in situ on carbon tubes derived from a metal–organic framework for asymmetric supercapacitors

Abstract

The NiGa-LDH@CNT-500@CC electrode prepared on carbon cloth has good specific capacitance and cycle stability. This is mainly due to the high conductivity and large specific surface area of carbon nanomaterial prepared by MOF.

Road Map for In Situ Grown Binder‐Free MOFs and Their Derivatives as Freestanding Electrodes for Supercapacitors

“…The bimetallic phosphide structure of the electrode (ZnNiP/NF) besides delivering appreciable energy storage behavior, provided stability to the electrode with phosphide nanoparticles alleviating the collapse of the electrode during cycling. Other reports on in situ grown bimetallic MOFs and derivatives include combining gallium (Ga) with Ni (NiGa‐LDH/CNT/CC) to obtain MOF and combine them with CNT, [ 148 ] and the works of Zhang and co‐workers to create a heterojunction between CuO nanowire grown on Cu mesh [ 134 ] and bimetallic MOFs (ZnCo‐MOF [ 149 ] and ZrMn‐MOF [ 150 ] ). The outstanding energy storage of the electrodes (ZnCo‐MOF/CuO/Cu mesh and ZrMn‐MOF/CuO/Cu mesh) together with high structural merits to withstand up to 20 000 GCD cycles with theoretical calculations inform more in designing electrode materials for energy storage applications.…”

Morphology-controllable bimetallic MOFs/textile composite electrodes with high areal capacitance for flexible electronic devices

“…Benefiting from the improved electrical conductivity, the hybrid material delivered a high specific energy of 31.2 W h kg −1 at 656.4 W kg −1 . Li et al 18 fabricated a nickel gallium layered hydroxide nanosheet (NiGa-LDH)/carbon nanotube (CNT) composite for supercapacitor electrodes, which exhibits an improved specific capacitance of 2580 F g −1 at 1 A g −1 . Although the conductivity of MOFs has been greatly increased by combining them with highly conductive materials, most of the materials reported in the past are powders which rely on non-conductive adhesives to combine with the current collector.…”

CuCo2O4/NiCo-Metal–Organic Framework Nanoflake Arrays for High-Performance Supercapacitors

“…Owing to their characteristics of diverse structures, tunable pore size, large specific surface area, and abundant active redox sites, MOFs have been widely studied as electrode materials of SCs. , However, their poor electrical conductivity and inferior chemical stability hinder further applications of MOFs. To solve this problem, many researches have combined MOFs with other materials, such as conducting polymers and metal oxides. , Not only could the advantages of each component be inherited in hybrid MOFs but also a synergy effect between different materials could shorten the electron-transfer distance, thus leading to improved energy storage ability . Wang and co-workers constructed polyoxometalate-based MOFs with conductive polypyrrole, achieving better conductivity and greater capacitance.…”

“…To solve this problem, many researches have combined MOFs with other materials, such as conducting polymers 5 and metal oxides. 6,7 Not only could the advantages of each component be inherited in hybrid MOFs but also a synergy effect between different materials could shorten the electron-transfer distance, thus leading to improved energy storage ability. 8 Wang and co-workers 9 constructed polyox-ometalate-based MOFs with conductive polypyrrole, achieving better conductivity and greater capacitance.…”