Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/76271
| Title: | Cyclohexanedione as the negative electrode reaction for aqueous organic redox flow batteries | Authors: | Leung, P Martin, T Liras, M Berenguer, AM Marcilla, R Shah, A An, L Anderson, MA Palma, J |
Issue Date: | 1-Jul-2017 | Source: | Applied energy, 1 July 2017, v. 197, p. 318-326 | Abstract: | The electrochemical reduction and oxidation of cyclohexanedione is evaluated for the first time as the negative electrode reaction in an organic redox flow battery. Electrochemical characterization indicates that the redox reaction of cyclohexanedione is a proton-coupled electron transfer process with quasi reversible behavior in acidic media (pH < 3). Among three isomeric compounds (1,2-, 1,3- and 1,4-cyclohexanedione), the reduction of 1,3-cyclohexanedione exhibits the most negative electrode potential (c.a.-0.6 V vs. Ag vertical bar AgCl (c.a-0.4 V vs. NHE)) as well as the widest pH operating range (pH 1-5) for relatively reversible reactions. The resulting electrode potential is the most negative of those to have been reported in neutral/acidic electrolytes. 1,3-cyclohexanedione is subsequently used as the active species in the negative electrode of a parallel plate flow cell, which is charge-discharge cycled at 3.4 mA cm(-2) for 100 cycles, yielding half-cell coulombic efficiencies of c.a. 99%. The organic molecules derived from this group are observed to have high solubilities (>2 M) and exhibit reduction process with up to 4 electrons transferred. | Keywords: | Aqueous flow batteries Cyclohexanedione Organic flow batteries Redox flow batteries Soluble |
Publisher: | Pergamon Press | Journal: | Applied energy | ISSN: | 0306-2619 | EISSN: | 1872-9118 | DOI: | 10.1016/j.apenergy.2017.04.023 | Rights: | © 2017 Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.
org/licenses/by/4.0/). The following publication Leung, P., Martin, T., Liras, M., Berenguer, A. M., Marcilla, R., Shah, A., ... & Palma, J. (2017). Cyclohexanedione as the negative electrode reaction for aqueous organic redox flow batteries. Applied Energy, 197, 318-326 is available at https://doi.org/10.1016/j.apenergy.2017.04.023. |
| Appears in Collections: | Journal/Magazine Article |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 1-s2.0-S030626191730421X-main.pdf | 1.44 MB | Adobe PDF | View/Open |
Access
View full-text via PolyU eLinks 
Page views
57
Last Week
0
0
Last month
Citations as of Jun 4, 2023
Downloads
16
Citations as of Jun 4, 2023
SCOPUSTM
Citations
32
Citations as of Jun 8, 2023
WEB OF SCIENCETM
Citations
30
Last Week
1
1
Last month
Citations as of Jun 8, 2023
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.