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Journal article
Enhancing Mass Transport in Redox Flow Batteries by Tailoring Flow Field and Electrode Design
Journal of the Electrochemical Society, v 163(1), pp A5163-A5169
01 Jan 2016
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
In this study, we investigate the mass transport effects of various flow field designs paired with raw and laser perforated carbon paper electrodes in redox flow batteries (RFBs). Previously, we observed significant increases in peak power density and limiting current density when perforated electrodes were used in conjunction with the serpentine flow field. In this work, we expand on our earlier findings by investigating various flow field designs (e.g., serpentine, parallel, interdigitated, and spiral), and continuously measuring pressure drop in each configuration. In all cases, these perforated electrodes are found to be associated with a reduction in pressure drop from 4% to 18%. Flow field designs with a continuous path from inlet to outlet (i.e., serpentine, parallel, spiral) are observed to exhibit improved performance (up to 31%) when paired with perforated electrodes, as a result of more facile reactant delivery and resulting greater utilization of the available surface area. Conversely, flow fields with discontinuous paths which force electrolyte to travel through the electrode (e.g. interdigitated), are adversely affected by the creation of perforations due to the high permeability 'channels' in the electrode. These results demonstrate that mass transport can significantly limit the performance of RFBs with carbon paper electrodes. (C) 2015 The Electrochemical Society. All rights reserved.
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Details
- Title
- Enhancing Mass Transport in Redox Flow Batteries by Tailoring Flow Field and Electrode Design
- Creators
- C. R. Dennison - Drexel UniversityErtan Agar - University of Massachusetts LowellBilen Akuzum - Drexel UniversityE. C. Kumbur - Drexel University
- Publication Details
- Journal of the Electrochemical Society, v 163(1), pp A5163-A5169
- Publisher
- Electrochemical Soc Inc
- Number of pages
- 7
- Grant note
- 1351161 / National Science Foundation; National Science Foundation (NSF) 1351161 / Directorate For Engineering; National Science Foundation (NSF); NSF - Directorate for Engineering (ENG)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000366180300023
- Scopus ID
- 2-s2.0-84949895457
- Other Identifier
- 991019168777704721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Electrochemistry
- Materials Science, Coatings & Films