Abstract
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Flexible supercapacitors with high power density, flexibility, and durability have shown enormous potential for smart electronics. Here, a continuous graphitic carbon nitride polyhedron assembly for flexible supercapacitor that is prepared by pyrolysis of carbon nanotubes wired zeolitic imidazolate framework-8 (ZIF-8) composites under nitrogen is reported. It exhibits a high specific capacitance of 426 F g?1 at current density of 1 A g?1 in 1 m H2SO4 and excellent stability over 10 000 cycles. The remarkable performance results from the continuous hierarchical structure with average pore size of 2.5 nm, high nitrogen-doping level (17.82%), and large specific surface area (920 m2 g?1). Furthermore, a flexible supercapacitor is developed by constructing the assembly with interpenetrating polymer network electrolyte. Stemming from the synergistic effect of high-performance electrode and highly ion-conductive electrolyte, superior energy density of 59.40 Wh kg?1 at 1 A g?1 is achieved. The device maintains a stable energy supply under cyclic deformations, showing wide application in flexible and even wearable conditions. The work paves a new way for designing pliable electrode with excellent electronic and mechanic property for long-lived flexible energy storage devices.
Original language | English |
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Article number | 1606219 |
Journal | Advanced Functional Materials |
Volume | 27 |
Issue number | 8 |
DOIs | |
Publication status | Published - 23 Feb 2017 |
Externally published | Yes |
Keywords
- carbon nitride
- continuous polyhedron
- flexible materials
- metal organic frameworks
- supercapacitors
ASJC Scopus subject areas
- General Chemistry
- General Materials Science
- Condensed Matter Physics