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Binder-free all-carbon composite supercapacitors.
Jarrar, Sabreen; Hussain, Shahzad; Haq, Atta Ul; Bhattacharya, Gourav; Saadeddin, Iyad; Servera, Llorenc; Ruiz, J M; Janem, Alaa; Daraghmeh, Allan.
Afiliación
  • Jarrar S; Department of Physics, An-Najah National University, PO Box 7, Nablus, West Bank, Palestine †.
  • Hussain S; Nanotechnology & Integrated Bio-Engineering Centre (NIBEC), Ulster University, York Street, BT15 1ED, United Kingdom.
  • Haq AU; Nanotechnology & Integrated Bio-Engineering Centre (NIBEC), Ulster University, York Street, BT15 1ED, United Kingdom.
  • Bhattacharya G; Nanotechnology & Integrated Bio-Engineering Centre (NIBEC), Ulster University, York Street, BT15 1ED, United Kingdom.
  • Saadeddin I; Department of Physics, An-Najah National University, PO Box 7, Nablus, West Bank, Palestine †.
  • Servera L; Escola Universitaria Salesiana de Sarria (EUSS), Passeig Sant Joan Bosco, 74, E-08217 Barcelona, Spain.
  • Ruiz JM; Escola Universitaria Salesiana de Sarria (EUSS), Passeig Sant Joan Bosco, 74, E-08217 Barcelona, Spain.
  • Janem A; Department of Chemistry, An-Najah National University, PO Box 7, Nablus, West Bank, Palestine.
  • Daraghmeh A; Department of Physics, An-Najah National University, PO Box 7, Nablus, West Bank, Palestine †.
Nanotechnology ; 35(30)2024 May 10.
Article en En | MEDLINE | ID: mdl-38653208
ABSTRACT
Carbon-based electrode materials have widely been used in supercapacitors. Unfortunately, the fabrication of the supercapacitors includes a polymeric binding material that leads to an undesirable addition of weight along with an increased charge transfer resistance. Herein, binder-free and lightweight electrodes were fabricated using powder processing of carbon nanofibers (CNFs) and graphene nanoplatelets (GNPs) resulting in a hybrid all-carbon composite material. The structural, morphological, and electrochemical properties of the composite electrodes were studied at different concentrations of GNPs. The specific capacitance (Cs) of the CNFs/GNPs composite was improved by increasing the concentration of GNPs. A maximum Cs of around 120 F g-1was achieved at 90 wt% GNPs which is around 5-fold higher in value than the pristine CNFs in 1 M potassium hydroxides (KOH), which then further increased to 189 F g-1in 6 M KOH electrolyte. The energy density of around 20 Wh kg-1with the corresponding power density of 340 W kg-1was achieved in the supercapacitor containing 90 wt% GNPs. The enhanced electrochemical performance of the composite is related to the presence of a synergistic effect and the CNFs establishing conductive/percolating networks. Such binder-free all-carbon electrodes can be a potential candidate for next-generation energy applications.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanotechnology Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanotechnology Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido