Search

Metal–organic frameworks (MOFs) have been widely explored and applied in many fields. However, the poor electrical conductivity of many traditional MOFs greatly limits their application in electrochemistry, especially in energy storage. In this study, a typical cMOF (Ni-HHTP, HHTP = 2,3,6,7,10,11-hexahydroxytriphenylene) was compounded with MXene nanosheets and a series of composites, namely MXene@Ni-HHTP-x (x = 1–8), were obtained. As a result, when MXene@Ni-HHTP-2 was assembled as a positive electrode material in an asymmetric supercapacitor, it achieved a specific capacitance of 416.6 F g−1 at 0.5 A g−1, manifesting a good performance in energy storage. [ABSTRACT FROM AUTHOR]

Metal‐organic frameworks (MOFs) have been widely investigated as functional materials with excellent properties. However, most MOFs are of poor electrical conductivity, which hinders their further application in electrochemical fields. Fortunately, the emergence of intrinsically conductive MOFs (c‐MOFs) alleviates this problem. Layered double hydroxides (LDHs) possess Faraday redox reactivity, which is favorable to capacitors. In this paper, we combined c‐MOFs with LDHs and prepared a series of NiCo‐LDH@M‐HHTP(‐EtOH) (M=Ni or Co; HHTP=2,3,6,7,10,11‐hexahydroxytriphenylene) multilayer nanoarrays, and the effects of solvent on the morphology and energy storage properties of the materials were investigated. When NiCo‐LDH@Co‐HHTP‐EtOH is applied as an electrode material in supercapacitors, it exhibits a capacitance of 830 F g−1 at 1 A g−1. Furthermore, it exhibits high energy density and excellent rate performance when assembled in aqueous asymmetric supercapacitors. [ABSTRACT FROM AUTHOR]