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Onion husk-derived high surface area graphene-like carbon for supercapacitor electrode material application.
Duisenbek, Asel; Beisenova, Yerkezhan; Beissenov, Renat; Askaruly, Kydyr; Yeleuov, Mukhtar; Abdisattar, Alisher.
Afiliación
  • Duisenbek A; Satbayev University, Almaty, Kazakhstan.
  • Beisenova Y; Institute of Combustion Problems, Almaty, Kazakhstan.
  • Beissenov R; Institute of Combustion Problems, Almaty, Kazakhstan.
  • Askaruly K; Institute of Combustion Problems, Almaty, Kazakhstan.
  • Yeleuov M; Kazakh-British Technical University, Almaty, Kazakhstan.
  • Abdisattar A; Satbayev University, Almaty, Kazakhstan.
Heliyon ; 10(12): e32915, 2024 Jun 30.
Article en En | MEDLINE | ID: mdl-38994073
ABSTRACT
In this study, we report the synthesis of graphene-like carbon derived from onion husk, with potential application as an electrode material in energy storage devices. Graphene-like carbon (GLC) was synthesized from onion husk (OH) by preliminary carbonization at 550 °C, followed by thermochemical activation at various temperatures to determine the optimal activation parameters. The surface morphology of graphene-like carbon from onion husk (GLC-OH) samples after carbonization shows distinct thermal exfoliation of the material. This layering upon activation in KOH promotes the formation of highly porous graphene-like carbon flakes. According to the Brunauer-Emmett-Teller (BET) method, the specific surface area at 850 °C was 1924 m2/g. The X-ray diffraction (XRD) and Raman spectroscopy results reveal the emergence of few-layer graphene with a significant amount of structural defects at 850 °C. As the temperature increases, the formation shifts towards multilayer graphene, which leads to a decrease in the specific surface area of the carbon material. The electrochemical characterization of the assembled GLC-OH-based supercapacitor synthesized at 850 °C revealed a markedly higher specific capacitance value of 131 F/g, along with a Coulombic efficiency of 98 % at a gravimetric current density of 1 A/g. Additionally, it exhibited a low charge transfer resistance (RCT) of approximately 1.4 Ω. Our study investigates the influence of structural changes on the electrochemical performance of biomass-derived activated carbon, highlighting the potential of graphene-like carbon from onion husk as a promising and low-cost material for future energy storage devices.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Heliyon Año: 2024 Tipo del documento: Article País de afiliación: Kazajstán Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

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