Onion husk-derived high surface area graphene-like carbon for supercapacitor electrode material application.

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 spectro

SUBMITTER: Duisenbek A 

PROVIDER: S-EPMC11237968 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature