Facilely prepared, N, O-codoped nanosheet derived from pre-functionalized polymer as supercapacitor electrodes

Jun Wang, Ting Yang, Zheling Zeng, Shuguang Deng

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Nitrogen and oxygen codoped carbon nanosheets derived from pre-functionalized polymer were prepared using a facile direct pyrolysis method. The carbon microstructures are tunable with micro- and mesopore size distribution and a large specific surface area (1628.9–2146.1 m2 g−1). Furthermore, a significant morphology change, from carbon granules to carbon nanosheets, occurred at an annealing temperature of 1273 K. The unique carbon sheet morphology guaranteed a good specific capacitance of 246.4 F g−1 at 0.5 A g−1 in 1 M H2SO4 aqueous solution and an excellent rate capability with a retention of 87.9% at 5 A g−1 as coin cell. The outstanding capacitance attributes to the combination of pseudocapacitance due to the N,O dual-doping and unique nanosheet morphology. Moreover, its outstanding cycling performance with 95% retention over 10,000 cycles at 10 A g−1 and an acceptable energy density of 8.6 Wh kg−1 at 0.2 A g−1 make the N,O-codoped carbon nanosheet potent and promising electrode material for high performance supercapacitors.

Original languageEnglish (US)
Pages (from-to)17-25
Number of pages9
JournalChemical Physics
Volume506
DOIs
StatePublished - Apr 27 2018

Fingerprint

Nanosheets
electrochemical capacitors
Polymers
Carbon
Electrodes
electrodes
carbon
polymers
Capacitance
capacitance
cycles
electrode materials
Specific surface area
pyrolysis
Supercapacitor
Pyrolysis
Nitrogen
flux density
Doping (additives)
Annealing

Keywords

  • Dual doped carbon
  • Excellent rate retention
  • Supercapacitor
  • Thin carbon sheet

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Facilely prepared, N, O-codoped nanosheet derived from pre-functionalized polymer as supercapacitor electrodes. / Wang, Jun; Yang, Ting; Zeng, Zheling; Deng, Shuguang.

In: Chemical Physics, Vol. 506, 27.04.2018, p. 17-25.

Research output: Contribution to journalArticle

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