Environmentally Friendly Water-Based Reduced Graphene Oxide/Cellulose Nanofiber Ink for Supercapacitor Electrode Applications
Document Type
Article
Publication Date
2-1-2024
Abstract
The agglomeration of reduced graphene oxide (rGO) in water makes the development of rGO inks for supercapacitor printing challenging. Cellulose nanofiber (CNF), a biodegradable and renewable nanomaterial, can act as a nanospacer, preventing the agglomeration and restacking of rGO flakes. In this work, rGO/CNF films were fabricated using an environmentally friendly water-based rGO/CNF ink. In the absence of an additional binder/surfactant, the rGO/CNF films demonstrated remarkably enhanced hydrophilicity while retaining good electrical conductivity. The concentration of CNF was varied to observe the variation in the electrochemical performance. At a current density of 1 mA/cm(2), the rGO/CNF-15 film exhibited a maximum areal capacitance of 98.61 mF/cm(2), closely matching that of pure rGO films. Because of its excellent electrical performance, ease of manufacturing, and environmental friendliness, this water-based rGO/CNF ink may have promising applications in the printing of supercapacitor electrodes.
Keywords
Film Electrode, Performance
Divisions
PHYSICS
Funders
Department of Science & Technology (India),Science and Engineering Research Board (SERB, DST) (CRD/2021/000437),ASEAN-India S&T Development Fund (AISTDF)
Publication Title
ACS Omega
Volume
9
Issue
10
Publisher
American Chemical Society
Publisher Location
1155 16TH ST, NW, WASHINGTON, DC 20036 USA