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Studies of performance enhancement of rGO-modified carbon electrodes for Vanadium Redox Flow Systems

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Title: Studies of performance enhancement of rGO-modified carbon electrodes for Vanadium Redox Flow Systems
Authors: Chakrabarti, BK
Nir, DP
Yufit, V
Tariq, F
Rubio Garcia, J
Maher, R
Kucernak, A
Aravind, PV
Brandon, NP
Item Type: Journal Article
Abstract: Reduced graphene oxide (rGO) suspended in an N,N′-dimethylformamide (DMF) solvent underwent electrophoretic deposition (EPD) on carbon paper (CP) electrodes. X-ray computed micro-tomography (XMT) indicates a 24 % increase in the specific surface area of CP modified with rGO in comparison to the untreated sample. Furthermore, XMT confirms that the deposition also penetrates into the substrate. Raman analysis shows that the rGO deposited is more amorphous than the CP electrode. A significant reduction in charge-transfer resistance of the VO2+/VO2+ reaction is also observed (from impedance measurements) in modified samples in comparison to untreated CP electrodes.
Issue Date: 3-Nov-2016
Date of Acceptance: 19-Sep-2016
URI: http://hdl.handle.net/10044/1/40500
DOI: https://dx.doi.org/10.1002/celc.201600402
ISSN: 2196-0216
Publisher: Wiley
Start Page: 194
End Page: 200
Journal / Book Title: ChemElectroChem
Volume: 4
Issue: 1
Copyright Statement: © 2016 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/K002252/1
Keywords: Science & Technology
Physical Sciences
Electrochemistry
cyclic voltammetry
electrophoresis
fuel cells
graphene
surface analysis
ELECTROPHORETIC DEPOSITION
POSITIVE ELECTRODE
GRAPHITE OXIDE
FUEL-CELLS
BATTERIES
VO2+/VO2+
COMPOSITE
CATALYST
ELECTROCATALYST
SUPERCAPACITORS
Publication Status: Published
Appears in Collections:Faculty of Engineering
Chemistry
Earth Science and Engineering
Faculty of Natural Sciences



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