Investigating the surface properties of red pepper industrial waste-based activated carbons for use as reversible supercapacitor electrodes
Yükleniyor...
Tarih
2023
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
This study presents the development of green and sustainable supercapacitor electrodes using activated carbons
derived from industrial waste from red pepper (RPW) via conventional chemical activation using ZnCl2 at
various carbonization/activation temperatures. The activated carbon samples were subjected to various
analytical techniques, including elemental analysis, N2 adsorption-desorption, Raman, FT-IR, and SEM-EDS. The
resulting carbon samples were then used to prepare standard coin-sized supercapacitor cells, which were tested
using cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS) techniques with a 6 M KOH electrolyte. The BET surface area and surface functionality of the
samples decreased as the temperature increased. The material produced at the highest temperature (AC800)
exhibited the lowest gravimetric capacitance value (131 F/g). However, it demonstrated perfectly reversible
electrochemical behavior with the highest capacitance retention of 50 % (between 0.5 A/g and 10 A/g) and
cyclic stability (>96 %) over 10,000 cycles among all the other materials. Conversely, the electrode material
produced at the lowest temperature (AC600) had the highest gravimetric capacitance value of 175 F/g but the
lowest electrochemical stability due to the contribution of pseudo faradaic processes in the storage mechanism.
Açıklama
Anahtar Kelimeler
Activated carbon, Supercapacitor, ZnCl2 activation, Surface properties, Electrochemical reversibility
Kaynak
Diamond and Related Materials
WoS Q Değeri
N/A
Scopus Q Değeri
Q1
Cilt
Sayı
138
Künye
İnal, İ. I. G., Koyuncu, F. ve Güzel, F. (2023). Investigating the surface properties of red pepper industrial waste-based activated carbons for use as reversible supercapacitor electrodes. Diamond and Related Materials, (138), 1-9.
