Affiliations 

  • 1 School of Mechanical Engineering, Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India
  • 2 DR3AM Center, Bataan Peninsula State University-Main Campus, City of Balanga, Bataan 2100, Philippines
  • 3 Department of Physics, Faculty of Science, Universiti Malaya, Kuala Lumpur 50603, Malaysia
ACS Omega, 2024 Mar 12;9(10):11730-11737.
PMID: 38496988 DOI: 10.1021/acsomega.3c09139

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/cm2, the rGO/CNF-15 film exhibited a maximum areal capacitance of 98.61 mF/cm2, 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.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.