Issue 4, 2023

Deep eutectic solvent assisted preparation of cellulose nanofibers and graphene composite films for supercapacitors

Abstract

Flexible cellulose nanofiber-modified graphene composite has been prepared using rice husk and graphite as the feedstocks. First, cellulose nanofibers (CNFs) were obtained from designated rice husk by green choline hydroxide (ChOH) and L-necropine hydrochloride deep eutectic solvent (DES), which can efficiently promote the dispersion of graphene oxide and relatively reduced graphene oxide (rGO) to form rGO/CNF composite membranes. The composite film shows good bending and low resistance to charge transfer. Electrochemical testing studies reveal that the as-prepared rGO/CNF composite membranes can work as an efficient electrode for supercapacitors, and it shows a high area-specific capacitance (382 mF cm−2 when the current density is 1 mA cm−2) and good cycle stability (6% capacitance loss over 3000 cycles at 10 mA cm−2). The rGO/CNF composite has potential applications as electrodes for flexible supercapacitors.

Graphical abstract: Deep eutectic solvent assisted preparation of cellulose nanofibers and graphene composite films for supercapacitors

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Article information

Article type
Paper
Submitted
22 Nov 2022
Accepted
12 Mai 2023
First published
15 Mai 2023
This article is Open Access
Creative Commons BY license

RSC Sustain., 2023,1, 1006-1015

Deep eutectic solvent assisted preparation of cellulose nanofibers and graphene composite films for supercapacitors

Z. Ma, Y. Duan, Y. Deng, H. Quan, X. Yang, H. Li, L. Ye, B. Xu and L. Yan, RSC Sustain., 2023, 1, 1006 DOI: 10.1039/D2SU00107A

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