Hierarchical porous activated carbon produced from spinach leaves as an electrode material for an electric double layer capacitor
Source abstract
Abstract
Hierarchical porous activated carbon (AC) was obtained by the carbonization of dried spinach leaves followed by activation with KOH. The product was characterized by nitrogen adsorption, FT-IR, FE-SEM and electrochemical tests. The AC has a dominant number of micropores, a medium number of mesopores and a few macropores with a specific surface area up to 2616 m2/g and a large number of oxygen-containing functional groups. The AC electrode exhibits a good double-layer capacitive behavior with a specific capacitance of 238 F/g in a 2 mol/L KOH electrolyte. A supercapacitor made of the AC has a high energy density of 10.1 Wh/Kg at a current density of 0.5 A/g and an excellent cyclic stability for 2 000 cycles over a potential range from 0 to 1.2 V.
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Research context
OpenAlex topics: Supercapacitor Materials and Fabrication · Conducting polymers and applications · Advanced battery technologies research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (28)
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