Highly Performance Supercapacitors Based on N‑Doped Activated Carbon
Derived from Shrimp Shell
Abstract
Herein, activated porous carbon with highly surface area has been
successfully synthesized from shrimp shell (SSAC) and the graphitic
structure is slightly maintained via adjusted KOH activation conditions.
The textual structural and morphological properties of prepared-SSAC was
characterized using X-ray diffraction (XRD), X-ray photoelectron
spectroscopy (XPS), Raman spectroscopy, scanning electron microscopy
(SEM) and energy-dispersive X-ray spectroscopy (EDS). The maximum
specific capacitance 262 F g−1 at current density of 1 A g-1 and 198F
g−1 at 10 A g−1 calculated in a 6 M KOH electrolyte. Moreover, high
energy and power densities of the supercapacitor are 28.266 Wh kg-1 and
4460 W kg-1, respectively, whereas the cycle-life performance is 85.5%
after 10,000 charging−discharging cycles at 1 A g−1 measured by
galvanostatic charge–discharge (GCD) studies is not firstly attributed
to high surface area, but due to the inveterate electron-rich nitrogen