期刊
ADVANCED MATERIALS
卷 30, 期 12, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201705710
关键词
Buchwald-Hartwig coupling; conjugated microporous polymers; energy storage; supercapacitors
类别
资金
- Shanghai Pujiang Talent Program [16PJ1400300]
- Fundamental Research Funds for the Central Universities [16D110618]
- Sino-German Center for Research Promotion [GZ879]
- National Natural Science Foundation of China [51673039]
- Shanghai Key Fundamental Project [16JC1400700/01]
Supercapacitors have received increasing interest as energy storage devices due to their rapid charge-discharge rates, high power densities, and high durability. In this work, novel conjugated microporous polymer (CMP) networks are presented for supercapacitor energy storage, namely 3D polyaminoanthraquinone (PAQ) networks synthesized via Buchwald-Hartwig coupling between 2,6-diaminoanthraquinone and aryl bromides. PAQs exhibit surface areas up to 600 m(2) g(-1), good dispersibility in polar solvents, and can be processed to flexible electrodes. The PAQs exhibit a three-electrode specific capacitance of 576 F g(-1) in 0.5 m H2SO4 at a current of 1 A g(-1) retaining 80-85% capacitances and nearly 100% Coulombic efficiencies (95-98%) upon 6000 cycles at a current density of 2 A g(-1). Asymmetric two-electrode supercapacitors assembled by PAQs show a capacitance of 168 F g(-1) of total electrode materials, an energy density of 60 Wh kg(-1) at a power density of 1300 W kg(-1), and a wide working potential window (0-1.6 V). The asymmetric supercapacitors show Coulombic efficiencies up to 97% and can retain 95.5% of initial capacitance undergo 2000 cycles. This work thus presents novel promising CMP networks for charge energy storage.
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