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Studies of performance enhancement of rGO-modified carbon electrodes for Vanadium Redox Flow Systems
File(s)
Author(s)
Chakrabarti, BK
Nir, DP
Yufit, V
Tariq, F
Rubio Garcia, J
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.
Date Issued
2016-11-03
Date Acceptance
2016-09-19
Citation
ChemElectroChem, 2016, 4 (1), pp.194-200
URI
DOI
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.
License URL
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Grant Number
EP/K002252/1
Subjects
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