Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 48, Pages 17465-17473Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201911023
Keywords
fibres; hierarchical structures; microdroplets; micro-mesoporous carbon frameworks; supercapacitors
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Funding
- National Natural Science Foundation of China [21736006, 21706120]
- Natural Science Foundation of Jiangsu Province [BK20170973]
- National Key Research and Development Program of China [2016YFB0401700]
- China Postdoctoral Science Foundation [2018M630549, 2019T120420]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Fund of State Key Laboratory of Materials-Oriented Chemical Engineering [ZK201720, ZK201704]
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Advanced methods, allowing the controllable synthesis of ordered structural nanomaterials with favourable charges transfer and storage, are highly important to achieve ideal supercapacitors with high energy density. Herein, we report a microliter droplet-based method to synthesize hierarchical-structured metal-organic framework/graphene/carbon nanotubes hybrids. The confined ultra-small-volume reaction, give well-defined hybrids with a large specific-surface-area (1206 m(2) g(-1)), abundant ionic-channels (narrow pore of 0.86 nm), and nitrogen active-sites (10.63 %), resulting in high pore-size utilization (97.9 %) and redox-activity (32.3 %). We also propose a scalable microfluidic-blow-spinning method to consecutively generate nanofibre-based flexible supercapacitor electrodes with striking flexibility and mechanical strength. The supercapacitors display large volumetric energy density (147.5 mWh cm(-3)), high specific capacitance (472 F cm(-3)) and stably deformable energy-supply.
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