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- Title
Conjugated Copper–Catecholate Framework Electrodes for Efficient Energy Storage.
- Authors
Liu, Jingjuan; Zhou, Yi; Xie, Zhen; Li, Yang; Liu, Yunpeng; Sun, Jie; Ma, Yanhang; Terasaki, Osamu; Chen, Long
- Abstract
A conjugated copper(II) catecholate based metal–organic framework (namely Cu‐DBC) was prepared using a D2‐symmetric redox‐active ligand in a copper bis(dihydroxy) coordination geometry. The π‐d conjugated framework exhibits typical semiconducting behavior with a high electrical conductivity of ca. 1.0 S m−1 at room temperature. Benefiting from the good electrical conductivity and the excellent redox reversibility of both ligand and copper centers, Cu‐DBC electrode features superior capacitor performances with gravimetric capacitance up to 479 F g−1 at a discharge rate of 0.2 A g−1. Moreover, the symmetric solid‐state supercapacitor of Cu‐DBC exhibits high areal (879 mF cm−2) and volumetric (22 F cm−3) capacitances, as well as good rate capability. These metrics are superior to most reported MOF‐based supercapacitors, demonstrating promising applications in energy‐storage devices.
- Subjects
ENERGY storage; ELECTRIC conductivity; ELECTRODES; METAL-organic frameworks; COPPER electrodes; ELECTRIC capacity; SUPERCAPACITOR electrodes
- Publication
Angewandte Chemie, 2020, Vol 132, Issue 3, p1097
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201912642