Reduced graphene oxide/cellulose nanocrystal composite films with high specific capacitance and tensile strength.

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  • Author(s): Ding Z;Ding Z; Tang Y; Tang Y; Tang Y; Zhu P; Zhu P
  • Source:
    International journal of biological macromolecules [Int J Biol Macromol] 2022 Mar 01; Vol. 200, pp. 574-582. Date of Electronic Publication: 2022 Jan 22.
  • Publication Type:
    Journal Article
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: Elsevier Country of Publication: Netherlands NLM ID: 7909578 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-0003 (Electronic) Linking ISSN: 01418130 NLM ISO Abbreviation: Int J Biol Macromol
    • Publication Information:
      Publication: Amsterdam : Elsevier
      Original Publication: Guildford, Eng., IPC Science and Technology Press.
    • Subject Terms:
      Graphite*/chemistry ; Cellulose*/chemistry ; Electric Capacitance* ; Tensile Strength* ; Nanoparticles*/chemistry; Hydrogen Bonding ; Oxidation-Reduction ; Nanocomposites/chemistry
    • Abstract:
      Due to the environmental degradation and energy depletion, the strategy for fabricating high-performance supercapacitor electrode materials based on graphene and nanocellulose has received great attention. Herein, an environmentally friendly reduced graphene oxide (RGO)/cellulose nanocrystal (CNC) composite conductive film was prepared using L-ascorbic acid (L-AA) as the reductant of graphene oxide (GO). Based on chemical structure analysis, L-AA was proved to be an effective reductant to remove oxygen containing groups of GO. Through microstructure observation, a unique stacking structure of CNC and RGO was observed, which could be largely attributed to the hydrogen bond interaction. Furthermore, the effect of CNC amount on the performance of RGO/CNC composite films was also systematically investigated. Particularly, the addition of CNC was found to exert a positive effect on the tensile strength, which might be mainly due to a mass of hydrogen bonds between the CNCs. Meanwhile, the RGO/CNC composite conductive film featured ideal electrical double-layer capacitive (EDLC) behavior, exhibiting a gravity specific capacitance of 222.5 F/g and tensile strength of 32.17 MPa at 20 wt% CNC content. Therefore, the RGO/CNC composite conductive films may hold great promise for environmentally friendly electrode materials of supercapacitors and flexible electrical devices.
      (Copyright © 2022 Elsevier B.V. All rights reserved.)
    • Contributed Indexing:
      Keywords: Cellulose nanocrystal; Composite conductive film; Hydrogen bond; Reduced graphene oxide; Specific capacitance; l-Ascorbic acid
    • Accession Number:
      7782-42-5 (Graphite)
      9004-34-6 (Cellulose)
      0 (graphene oxide)
    • Publication Date:
      Date Created: 20220125 Date Completed: 20240725 Latest Revision: 20240725
    • Publication Date:
      20240726
    • Accession Number:
      10.1016/j.ijbiomac.2022.01.130
    • Accession Number:
      35077747