Liu Jingjuan, Zhou Yi, Xie Zhen, Li Yang, Liu Yunpeng, Sun Jie, Ma Yanhang, Terasaki Osamu, Chen Long
Department of Chemistry, Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University, Tianjin, 300072, China.
School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China.
Angew Chem Int Ed Engl. 2020 Jan 13;59(3):1081-1086. doi: 10.1002/anie.201912642. Epub 2019 Dec 17.
A conjugated copper(II) catecholate based metal-organic framework (namely Cu-DBC) was prepared using a D -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 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 at a discharge rate of 0.2 A g . Moreover, the symmetric solid-state supercapacitor of Cu-DBC exhibits high areal (879 mF cm ) and volumetric (22 F cm ) capacitances, as well as good rate capability. These metrics are superior to most reported MOF-based supercapacitors, demonstrating promising applications in energy-storage devices.
使用具有D对称性的氧化还原活性配体，在铜双（二羟基）配位几何结构中制备了一种基于共轭儿茶酚铜（II）的金属有机框架（即Cu-DBC）。π-d共轭框架表现出典型的半导体行为，在室温下具有约1.0 S m的高电导率。得益于良好的导电性以及配体和铜中心出色的氧化还原可逆性，Cu-DBC电极具有优异的电容器性能，在0.2 A g的放电速率下，重量电容高达479 F g。此外，Cu-DBC的对称固态超级电容器表现出高面积电容（879 mF cm）和体积电容（22 F cm），以及良好的倍率性能。这些指标优于大多数已报道的基于MOF的超级电容器，展示了在储能设备中的应用前景。
