Pressure drop through platinized titanium porous electrodes for cerium-based redox flow batteries
Pressure drop through platinized titanium porous electrodes for cerium-based redox flow batteries
The pressure drop, Δp, across a redox flow battery is linked to pumping costs and energy efficiency, making fluid properties of the electrolyte important in scale-up operations. The Δp at diverse platinized titanium electrodes in Ce-based redox flow batteries is reported as a function of mean linear electrolyte velocity measured in a rectangular channel flow cell. Darcy's friction factor and permeability vs. Reynolds number are calculated. Average permeability values are: 7.10 × 10−4 cm2 for Pt/Ti mesh, 4.45 × 10−4 cm2 for Pt/Ti plate + turbulence promoters, 1.67 × 10−5 cm2 for Pt/Ti micromesh, and 1.31 × 10−6 cm2 for Pt/Ti felt. The electrochemical volumetric mass transport coefficient kmAer, Δp, is provided as a function of Δp. In the flow-by configuration, Pt/Ti felt combines high kmAe values with a relatively high math formula, followed by Pt/Ti micromesh. Pt/Ti mesh and Pt/Ti plate gave a lower Δp but poorer electrochemical performance. Implications for cell design are discussed.
1135-1146
Arenas, Luis F.
6e7e3d10-2aab-4fc3-a6d4-63a6614d0403
Ponce De León, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c
Walsh, Frank C.
309528e7-062e-439b-af40-9309bc91efb2
1 March 2018
Arenas, Luis F.
6e7e3d10-2aab-4fc3-a6d4-63a6614d0403
Ponce De León, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c
Walsh, Frank C.
309528e7-062e-439b-af40-9309bc91efb2
Arenas, Luis F., Ponce De León, Carlos and Walsh, Frank C.
(2018)
Pressure drop through platinized titanium porous electrodes for cerium-based redox flow batteries.
AIChE Journal, 64 (3), .
(doi:10.1002/aic.16000).
Abstract
The pressure drop, Δp, across a redox flow battery is linked to pumping costs and energy efficiency, making fluid properties of the electrolyte important in scale-up operations. The Δp at diverse platinized titanium electrodes in Ce-based redox flow batteries is reported as a function of mean linear electrolyte velocity measured in a rectangular channel flow cell. Darcy's friction factor and permeability vs. Reynolds number are calculated. Average permeability values are: 7.10 × 10−4 cm2 for Pt/Ti mesh, 4.45 × 10−4 cm2 for Pt/Ti plate + turbulence promoters, 1.67 × 10−5 cm2 for Pt/Ti micromesh, and 1.31 × 10−6 cm2 for Pt/Ti felt. The electrochemical volumetric mass transport coefficient kmAer, Δp, is provided as a function of Δp. In the flow-by configuration, Pt/Ti felt combines high kmAe values with a relatively high math formula, followed by Pt/Ti micromesh. Pt/Ti mesh and Pt/Ti plate gave a lower Δp but poorer electrochemical performance. Implications for cell design are discussed.
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Accepted/In Press date: 1 April 2016
e-pub ahead of print date: 25 October 2017
Published date: 1 March 2018
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Local EPrints ID: 417745
URI: http://eprints.soton.ac.uk/id/eprint/417745
ISSN: 0001-1541
PURE UUID: f20d202c-f73e-466f-a4e3-349aa03cccec
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Date deposited: 13 Feb 2018 17:30
Last modified: 16 Mar 2024 06:13
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