期刊
ADVANCED FUNCTIONAL MATERIALS
卷 30, 期 30, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202002664
关键词
2D conjugated metal-organic frameworks; energy storage; micro-supercapacitor; milling exfoliation; ultrathin nanosheets
类别
资金
- ERC Starting Grant (FC2DMOF) [852909]
- ERC Consolidator Grant (T2DCP)
- Coordination Networks: Building Blocks for Functional Systems [SPP 1928]
- European Union's Horizon 2020 research and innovation programme [GrapheneCore2 785219]
- DFG project (2D polyanilines)
- Center of Advancing Electronics Dresden [EXC1056]
2D conjugated metal-organic frameworks (2Dc-MOFs) are emerging as a novel class of conductive redox-active materials for electrochemical energy storage. However, developing 2Dc-MOFs as flexible thin-film electrodes have been largely limited, due to the lack of capability of solution-processing and integration into nanodevices arising from the rigid powder samples by solvothermal synthesis. Here, the synthesis of phthalocyanine-based 2Dc-MOF (Ni-2[CuPc(NH)(8)]) nanosheets through ball milling mechanical exfoliation method are reported. The nanosheets feature with average lateral size of approximate to 160 nm and mean thickness of approximate to 7 nm (approximate to 10 layers), and exhibit high crystallinity and chemical stability as well as a p-type semiconducting behavior with mobility of approximate to 1.5 cm(2)V(-1)s(-1)at room temperature. Benefiting from the ultrathin feature, the nanosheets allow high utilization of active sites and facile solution-processability. Thus, micro-supercapacitor (MSC) devices are fabricated mixing Ni-2[CuPc(NH)(8)] nanosheets with exfoliated graphene, which display outstanding cycling stability and a high areal capacitance up to 18.9 mF cm(-2); the performance surpasses most of the reported conducting polymers-based and 2D materials-based MSCs.
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