Issue 16, 2024

Chemically tuned cellulose nanocrystals/single wall carbon nanosheet based electrodes for hybrid supercapacitors

Abstract

Adopting a green and environmentally friendly strategy requires the development of supercapacitor electrodes using sustainable, renewable, and environmentally beneficial materials. Chemically stable and renewable cellulose-based supercapacitors need high-quality carbon materials with excellent mechanical and electrical characteristics to create a three-dimensional network-based electrode. Nevertheless, using cellulose as a supercapacitor electrode with enhanced electrochemical characteristics presents a difficulty. This paper describes creating and producing electrodes for supercapacitors using nano-composites consisting of wrapped-around single-walled carbon nanotubes to improve performance. The electrode's optimal electrochemical characteristics were achieved by using a concentration of 9 wt% MACNC/CNT nanocomposites. The proposed electrode material for the MACNC-based flexible supercapacitor assembly demonstrates outstanding electrochemical stability and effective electrochemical performance. When tested in a three-electrode cell configuration, it achieves an areal capacitance of 1389.202 mF cm−2 at a current density of 0.02 A cm−2, with 74.6% cyclic retention after 12 000 cycles. This study effectively converted agricultural waste into high-performing supercapacitor electrodes using a simple and cost-efficient method. This innovative design and outstanding electrochemical performance show great promise in using environmentally friendly materials to improve nanocellulose-based sustainable energy storage systems.

Graphical abstract: Chemically tuned cellulose nanocrystals/single wall carbon nanosheet based electrodes for hybrid supercapacitors

Supplementary files

Article information

Article type
Paper
Submitted
27 2月 2024
Accepted
21 6月 2024
First published
02 7月 2024

Sustainable Energy Fuels, 2024,8, 3595-3609

Chemically tuned cellulose nanocrystals/single wall carbon nanosheet based electrodes for hybrid supercapacitors

N. Choudhary, S. Singh, G. Malik, S. Bhardwaj, S. Sharma, A. Tomar, S. Issar, R. Chandra and P. K. Maji, Sustainable Energy Fuels, 2024, 8, 3595 DOI: 10.1039/D4SE00286E

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