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@article{Chakrabarti:2020:10.3390/batteries6030038,
author = {Chakrabarti, B and Rubio-Garcia, J and Kalamaras, E and Yufit, V and Tariq, F and Low, CTJ and Kucernak, A and Brandon, N},
doi = {10.3390/batteries6030038},
journal = {Batteries},
pages = {1--20},
title = {Evaluation of a non-aqueous vanadium redox flow battery using a deep eutectic solvent and graphene-modified carbon electrodes via electrophoretic deposition},
url = {http://dx.doi.org/10.3390/batteries6030038},
volume = {6},
year = {2020}
}

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TY  - JOUR
AB  - Common issues aqueous-based vanadium redox flow batteries (VRFBs) face include low cell voltage due to water electrolysis side reactions and highly corrosive and environmentally unfriendly electrolytes (3 to 5 M sulfuric acid). Therefore, this investigation looks into the comparison of a highly conductive ionic liquid with a well-studied deep eutectic solvent (DES) as electrolytes for non-aqueous VRFBs. The latter solvent gives 50% higher efficiency and capacity utilization than the former. These figures of merit increase by 10% when nitrogen-doped graphene (N-G)-modified carbon papers, via a one-step binder-free electrophoretic deposition process, are used as electrodes. X-ray computed tomography confirms the enhancement of electrochemical surface area of the carbon electrodes due to N-G while electrochemical impedance spectra show the effect of its higher conductivity on improving RFB performance. Finally, potential strategies for the scaling-up of DES-based VRFBs using a simple economical model are also briefly discussed. From this study, it is deduced that more investigations on applying DESs as non-aqueous electrolytes to replace the commonly used acetonitrile may be a positive step forward because DESs are not only cheaper but also safer to handle, far less toxic, non-flammable, and less volatile than acetonitrile.
AU  - Chakrabarti,B
AU  - Rubio-Garcia,J
AU  - Kalamaras,E
AU  - Yufit,V
AU  - Tariq,F
AU  - Low,CTJ
AU  - Kucernak,A
AU  - Brandon,N
DO  - 10.3390/batteries6030038
EP  - 20
PY  - 2020///
SN  - 2313-0105
SP  - 1
TI  - Evaluation of a non-aqueous vanadium redox flow battery using a deep eutectic solvent and graphene-modified carbon electrodes via electrophoretic deposition
T2  - Batteries
UR  - http://dx.doi.org/10.3390/batteries6030038
UR  - https://www.mdpi.com/2313-0105/6/3/38
UR  - http://hdl.handle.net/10044/1/81479
VL  - 6
ER  -

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