An undivided zinc-cerium redox flow battery operating at room temperature
An undivided zinc-cerium redox flow battery operating at room temperature
An undivided zinc-cerium hybrid redox flow battery is proposed. High discharge cell voltage of c.a. 2.1 V at 20 mA cm-2 and an average energy efficiency of 75 % were obtained. The cerium half-cell reaction was highly reversible on a carbon felt electrode with less than a 15 mV change between charge and discharge cycles. The limiting factor for extended cycling was zinc negative electrode, as residual zinc remained on the electrode after discharge. The battery self-discharge was evaluated by monitoring the open-circuit cell voltage, the capacity was found to last for approximately 7 hours after being charged for 30 minutes
770-7733
Leung, P.K.
0a85d602-5141-41e5-8dbd-12873d5b9d4a
Ponce de Leon, C.
508a312e-75ff-4bcb-9151-dacc424d755c
Walsh, F.C.
309528e7-062e-439b-af40-9309bc91efb2
April 2011
Leung, P.K.
0a85d602-5141-41e5-8dbd-12873d5b9d4a
Ponce de Leon, C.
508a312e-75ff-4bcb-9151-dacc424d755c
Walsh, F.C.
309528e7-062e-439b-af40-9309bc91efb2
Leung, P.K., Ponce de Leon, C. and Walsh, F.C.
(2011)
An undivided zinc-cerium redox flow battery operating at room temperature.
Electrochemistry Communications, 13 (8), .
(doi:10.1016/j.elecom.2011.04.011).
Abstract
An undivided zinc-cerium hybrid redox flow battery is proposed. High discharge cell voltage of c.a. 2.1 V at 20 mA cm-2 and an average energy efficiency of 75 % were obtained. The cerium half-cell reaction was highly reversible on a carbon felt electrode with less than a 15 mV change between charge and discharge cycles. The limiting factor for extended cycling was zinc negative electrode, as residual zinc remained on the electrode after discharge. The battery self-discharge was evaluated by monitoring the open-circuit cell voltage, the capacity was found to last for approximately 7 hours after being charged for 30 minutes
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Published date: April 2011
Organisations:
Engineering Mats & Surface Engineerg Gp, Engineering Science Unit
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Local EPrints ID: 184981
URI: http://eprints.soton.ac.uk/id/eprint/184981
ISSN: 1388-2481
PURE UUID: 36fa8145-e061-4d99-a1d1-95f64e11dd84
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Date deposited: 09 May 2011 13:08
Last modified: 15 Mar 2024 03:22
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Author:
P.K. Leung
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