Conductive Metal–Organic Framework Nanowire Array Electrodes for High‐Performance Solid‐State Supercapacitors

Abstract

The application of conventional metal–organic frameworks (MOFs) as electrode materials in supercapacitors is largely hindered by their conventionally poor electrical conductivity. This study reports the fabrication of conductive MOF nanowire arrays (NWAs) and the application of them as the sole electrode material for solid‐state supercapacitors. By taking advantage of the nanostructure and making full use of the high porosity and excellent conductivity, the MOF NWAs in solid‐state supercapacitor show the highest areal capacitance and best rate performance of all reported MOF materials for supercapacitors, which is even comparable to most carbon materials.

Structural Engineering of Low‐Dimensional Metal–Organic Frameworks: Synthesis, Properties, and Applications

“…[125] Typically, MOP-1 crystals were first synthesized through the solvothermal reaction of Cu 2+ and 1,3-benzenedicarboxylate. [89] Copyright 2017, Wiley-VCH. In addition to the aforementioned methods which introduced foreigner ligands, the direct phase transformation from bulk MOFs to 1D structures have been also achieved, which relies on properly adjusting the coordination between solvent and SBUs.…”

“…More recently, Xu and co-workers fabricated conductive Cu-CAT nanowire arrays on carbon paper by adding carbon paper into the reaction solution of Cu(Ac) 2 ·H 2 O and 2,3,6,7, 10,11-hexahydroxytriphenylene (HHTP) (Figure 5e). [89] By prolonging the reaction time for the Cu-CAT nanowires, their length can be increased from 3 to 15 µm (Figure 5f-h).…”

“…Although this value is much lower than that of graphene oxide nanosheets (≈200 GPa), it is high enough to form a robust and freestanding MOF thin film with good photoluminescence property. [89] Compared to the electrode composed of Cu-CTA powder, the electrode of MOF nanowire array exhibited good rate performance and cycling stability. [67,82,83] Moreover, the flexibility of LD MOFs also gives them the characteristics of morphological and structural transformation.…”

[Cu3(C6Se6)]n: The First Highly Conductive 2D π–d Conjugated Coordination Polymer Based on Benzenehexaselenolate

“…[1,2] Recently, there are growing interests in design and synthesis of 2D covalent or noncovalent organic materials with in-plane π-conjugation structure. [17][18][19][20][21][22][23][24][25][26][27][28][29] The planar structure of these graphene analogues facilitates the synthesis of benzene-and triphenylene-polyselenols and CPs containing these ligands (relevant results are in preparation). [17][18][19][20][21][22][23][24][25][26][27][28][29] The planar structure of these graphene analogues facilitates the synthesis of benzene-and triphenylene-polyselenols and CPs containing these ligands (relevant results are in preparation).…”

“…The synthesis of protected BHS hexakis(tertbutylseleno)benzene (t-Bu 6 BHS) was reported by Turner and Vaid in 2012. [17][18][19][20][21][22][23][24][25][26][27][28][29] The planar structure of these graphene analogues facilitates the [33] An alternative approach is Lewis acid promoted deprotection protocol.…”