Flexible, ultralight, and high-energy density electrochemical capacitors using sustainable materials

Pal, Bhupender and Matsoso, Joyce Boitumelo and Parameswaran, Abhilash Karuthedath and Roy, Pradip Kumar and Lukas, Dekanovsky and Luxa, Jan and Marvan, Petr and Azadmanjiri, Jalal and Hrdlička, Zdeněk and Jose, Rajan and Sofer, Zdeněk (2022) Flexible, ultralight, and high-energy density electrochemical capacitors using sustainable materials. Electrochimica Acta, 415 (140239). pp. 1-13. ISSN 0013-4686. (Published)

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Abstract

Development of flexible, ultralight, scalable and non-leaking energy storage devices such as electrochemical capacitors that are on par with commercial standards and offer compliances while retaining safety remain a significant challenge for the realization of wearable devices. Generally, the bottleneck to the improvement of such devices is the need to use ecofriendly electrode and electrolyte materials with desirable surface, electrochemical and mechanical properties. Thus, this study provides a new platform for development of flexible, ultralight, freestanding electrochemical capacitor using a composite of cellulose/SWCNTs (CL/CNTs) electrode films and a new cellulose/NaHSO4 hydrogel electrolyte. Herein, we took advantage of the renewability and flexibility of cellulose in combination with the high conductivity and storage capacity of SWCNTs to create a high specific capacitance, energy and power density. Moreover, the new cellulose/NaHSO4 hydrogel electrolyte provided stable cycling, leading to non-leakage device exhibiting ∼100% capacitance retention after 3000 cycles.

Item Type:	Article
Additional Information:	Indexed by Scopus
Uncontrolled Keywords:	Binder free; Cellulose-CNTs composite; Energy storage materials; Freestanding electrode; Supercapacitors
Subjects:	H Social Sciences > HD Industries. Land use. Labor Q Science > Q Science (General) T Technology > T Technology (General)
Faculty/Division:	Faculty of Industrial Sciences And Technology
Depositing User:	Mr Muhamad Firdaus Janih@Jaini
Date Deposited:	03 Oct 2024 04:25
Last Modified:	03 Oct 2024 04:25
URI:	http://umpir.ump.edu.my/id/eprint/42642
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