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Chitin derived nitrogen-doped porous carbons with ultrahigh specific surface area and tailored hierarchical porosity for high performance supercapacitors

Journal of Bioresources and Bioproducts, 2021-05, Vol.6 (2), p.142-151 [Peer Reviewed Journal]

2021 The Authors ;ISSN: 2369-9698 ;DOI: 10.1016/j.jobab.2021.02.002

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  • Title:
    Chitin derived nitrogen-doped porous carbons with ultrahigh specific surface area and tailored hierarchical porosity for high performance supercapacitors
  • Author: Zheng, Si ; Zhang, Jianwei ; Deng, Hongbing ; Du, Yumin ; Shi, Xiaowen
  • Subjects: Chitin ; NaOH activation ; Nitrogen doping ; Pore structure ; Supercapacitors
  • Is Part Of: Journal of Bioresources and Bioproducts, 2021-05, Vol.6 (2), p.142-151
  • Description: In this study, we report the fabrication of nitrogen rich activated nanosized carbon with hierarchical micro/mesoporous and ultrahigh specific surface area by template-free and one-step carbonization-activation method, which greatly simplified the process and avoided the waste of reagents. Chitin nanoparticles were prepared by a mechanical induced sol-gel transition process in NaOH/Urea solvent and a subsequent carbonization utilizing NaOH for activation and urea for N doping, resulting in activated carbon (ACNC-800) with extraordinary specific surface area (2631 m2/g) and high nitrogen content (7.1%). Further characterization and electrochemical tests demonstrate high electrochemical performance of the activated nanocarbon. Under the current density of 0.5 A/g, the specific capacitance of the three-electrode system is 245 F/g and that of the two-electrode system is 227 F/g. The assembled capacitors exhibit superior rate performance and good cycle stability (98% capacitance retention after 10000 charge-discharge cycles). This work introduces a simple and efficient strategy to prepare N-doped carbon with hierarchical porosity applied to high performance supercapacitors.
  • Publisher: Elsevier B.V
  • Language: English
  • Identifier: ISSN: 2369-9698
    DOI: 10.1016/j.jobab.2021.02.002
  • Source: DOAJ Directory of Open Access Journals
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