| 초록 |
Supercapacitors are one of the most promising energy storage devices with excellent stability, high power density, and rapid charge discharge rate. Nitrogen-doped porous carbons were prepared by a simple carbonization and KOH activation of anchovy powder for high-performance supercapacitor electrode materials. The chemical composition and porosity of anchovy carbon materials were characterized by X-ray photoelectron spectroscopy (XPS) and nitrogen sorption isotherms measurements and exhibited high nitrogen contents (2 at%) and specific surface area (1415 m2g-1), respectively. Anchovy carbon carbonized at 1000 ℃ exhibited superior specific capacitance of 180 Fg-1 (commercial activated carbon: less than 100 Fg-1) in 6 M KOH electrolyte at a current density of 1 Ag-1. The high specific capacitance could be obtained due to the high specific surface area and nitrogen doping effects. |
