Document Type
Article
Source of Publication
Journal of Energy Storage
Publication Date
4-15-2024
Abstract
In this study, bio-derived natural agar powder was used as an electrocatalyst for application as an electrode in all‑vanadium redox flow batteries. Different concentrations of agar solution were tested, and cyclic voltammetry studies confirmed that agar loaded felts have good catalytic activity toward both redox couples V4+/V5+ at the positive and V2+/V3+ at the negative side. Energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy demonstrated the presence of higher amount of oxygen-functional groups on the surface of the fibers. Contact angle measurements demonstrated an enormous increase in hydrophilicity of the felts treated with agar. Long-term charge/discharge profiles revealed 6 % higher energy efficiency and 13 % better discharge capacity retention for agar modified felts when compared to thermally treated carbon felts at a relatively high current density of 150 mA cm−2.
DOI Link
ISSN
Publisher
Elsevier BV
Volume
84
Disciplines
Materials Science and Engineering
Keywords
Agar, Bio-derived polymer, Carbon felt, Electrode, Redox flow batteries
Scopus ID
Recommended Citation
Fetyan, Abdulmonem; Alhammadi, Ayoob; Matouk, Zineb; Andisetiawan, Anugrah; and Bahaa, Ahmed, "Influence of eco-friendly agar-derivatives on the electrochemical performance of carbon felts electrodes of vanadium redox flow battery" (2024). All Works. 6362.
https://zuscholars.zu.ac.ae/works/6362
Indexed in Scopus
yes
Open Access
yes
Open Access Type
Green: A manuscript of this publication is openly available in a repository