Affiliation:
1. Thailand Institute of Nuclear Technology (Public Organization), 9/9 Moo 7, Saimoon, Ongkharak, Nakhon Nayok 26120, Thailand
Abstract
This study introduces a gamma pretreatment of water hyacinth powder for activated carbon (AC) production with improved electrochemical properties for supercapacitor applications. The structural and morphological changes of post-irradiation were meticulously analyzed using scanning electron microscopy (SEM), Raman spectroscopy, Fourier-transform infrared spectroscopy (FT-IR), Brunauer–Emmett–Teller (BET) analysis, and X-ray photoelectron spectroscopy (XPS). The pretreatment significantly modifies the pore structure and reduces the particle size of the resulting activated carbon (WHAC). Nitrogen adsorption-desorption isotherms indicated a substantial increase in micropore volume with escalating doses of gamma irradiation. Electrochemically, the activated carbon produced from pretreated WH at 100 kGy exhibited a marked increase in specific capacitance, reaching 257.82 F g−1, a notable improvement over the 95.35 F g−1 of its untreated counterpart, while maintaining 99.40% capacitance after 7000 cycles. These findings suggest that gamma-pretreated biomasses are promising precursors for fabricating high-performance supercapacitor electrodes, offering a viable and environmentally friendly alternative for energy storage technology development.
Funder
Thailand Institute of Nuclear Technology
Thailand Science Research and Innovation
National Science Research and Innovation Fund
Reference67 articles.
1. The porous carbon derived from water hyacinth with well-designed hierarchical structure for supercapacitors;Zheng;J. Power Sources,2017
2. Supercapacitors: Properties and applications;Libich;J. Energy Storage,2018
3. Olabi, A.G., Abbas, Q., Al Makky, A., and Abdelkareem, M.A. (2022). Supercapacitors as next generation energy storage devices: Properties and applications. Energy, 248.
4. Gamma-radiated biochar carbon for improved supercapacitor performance;Adhamash;RSC Adv.,2020
5. WO3 nanoflowers with excellent pseudo-capacitive performance and the capacitance contribution analysis;Qiu;J. Mater. Chem. A,2016