Nanoarchitectonics with improved supercapacitive performance of jering‐derived porous activated carbon electrodes in aqueous electrolyte

Sunil, Vaishak and Salehan, Shahira Shaura and Ganesh, Gayathry and Rasidi, Roslan and Karnan, M. and Shetty, Manjunath and Samantray, R. and Jose, Rajan and Izan Izwan, Misnon (2024) Nanoarchitectonics with improved supercapacitive performance of jering‐derived porous activated carbon electrodes in aqueous electrolyte. Ionics. pp. 1-10. ISSN 1862-0760. (In Press / Online First) (In Press / Online First)

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Abstract

The global shift from non-renewable to renewable energy sources demands advancements in energy storage solutions to effectively mitigate carbon footprints. Towards this direction, this study envisages the utilisation of activated carbon (AC) derived from jering pods (JP) synthesised at three different temperatures as supercapacitor (SC) electrode material. The physicochemical properties of the material were studied using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), and nitrogen (N₂) gas adsorption studies. In a half-cell study conducted in a 6 M aqueous KOH electrolyte, the best-performing AC delivered a specific capacitance (CS) of 301 F/g at 0.5 A/g. A full device assembly demonstrated a CS of 71 F/g at 0.5 A/g, energy density (ED), and power density (PD) of ~ 14 Wh/kg and ~ 9000 W/kg, respectively. The device showed excellent cyclic stability of ~ 96% of its initial capacitance after 3000 cycles. These findings present the viability of the valorisation of JP as a sustainable electrode material for SC application.

Item Type:	Article
Uncontrolled Keywords:	Biomass; Supercapacitors; Electrochemical capacitor; Energy storage; Electrochemistry
Subjects:	Q Science > Q Science (General) Q Science > QD Chemistry
Faculty/Division:	Faculty of Industrial Sciences And Technology Institute of Postgraduate Studies Centre for Advanced Intelligent Materials
Depositing User:	Mrs Norsaini Abdul Samat
Date Deposited:	10 Jul 2024 01:14
Last Modified:	10 Jul 2024 01:14
URI:	http://umpir.ump.edu.my/id/eprint/41834
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