Kenaf-based activated carbon: A sustainable solution for high-performance aqueous symmetric supercapacitors.
Chemosphere
; 354: 141593, 2024 Apr.
Article
in En
| MEDLINE
| ID: mdl-38460854
ABSTRACT
This study presents an innovative method for synthesizing activated carbon with an exceptionally high surface area (3359 m2 g-1) using kenaf fiber-based biochar through chemical activation. The achieved specific surface area surpasses activated carbon derived from other reported fiber-based precursors. The resulting activated carbon was investigated as electrodes for supercapacitors, revealing a remarkable maximum capacitance of 312 F g-1 at a current density of 0.5 A g-1. An aqueous symmetric supercapacitor employing these high-surface-area electrodes exhibited an outstanding energy density of 18.9 Wh kg-1 at a power density of 250 W kg-1. Notably, the supercapacitor retained exceptional capacitance, maintaining 93% of its initial capacitance even after 5000 charge-discharge cycles.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Charcoal
/
Hibiscus
Language:
En
Journal:
Chemosphere
Year:
2024
Document type:
Article
Affiliation country:
Malasia