A Continuous Carbon Nitride Polyhedron Assembly for High-Performance Flexible Supercapacitors

C. Lu, D. Wang, J. Zhao, S. Han, Wei Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

102 Citations (Scopus)

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 languageEnglish
Article number1606219
JournalAdvanced Functional Materials
Volume27
Issue number8
DOIs
Publication statusPublished - 23 Feb 2017
Externally publishedYes

Keywords

  • carbon nitride
  • continuous polyhedron
  • flexible materials
  • metal organic frameworks
  • supercapacitors

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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