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Cho, Kyung Hwa
Water-Environmental Informatics Lab (WEIL)
Research Interests
  • Water Quality Monitoring and Modeling, Water Treatment Process Modeling

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Simultaneous Energy Storage and Seawater Desalination using Rechargeable Seawater Battery: Feasibility and Future Directions

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Title
Simultaneous Energy Storage and Seawater Desalination using Rechargeable Seawater Battery: Feasibility and Future Directions
Author
Son, MoonPark, SanghunKim, NamhyeokAngeles, Anne ThereseKim, YoungsikCho, Kyung Hwa
Issue Date
2021-09
Publisher
WILEY
Citation
ADVANCED SCIENCE, v.8, no.18, pp.2101289
Abstract
Rechargeable seawater battery (SWB) is a unique energy storage system that can directly transform seawater into renewable energy. Placing a desalination compartment between SWB anode and cathode (denoted as seawater battery desalination; SWB-D) enables seawater desalination while charging SWB. Since seawater desalination is a mature technology, primarily occupied by membrane-based processes such as reverse osmosis (RO), the energy cost has to be considered for alternative desalination technologies. So far, the feasibility of the SWB-D system based on the unit cost per desalinated water ($ m(-3)) has been insufficiently discussed. Therefore, this perspective aims to provide this information and offer future research directions based on the detailed cost analysis. Based on the calculations, the current SWB-D system is expected to have an equipment cost of approximate to 1.02 $ m(-3) (lower than 0.60-1.20 $ m(-3) of RO), when 96% of the energy is recovered and stable performance for 1000 cycles is achieved. The anion exchange membrane (AEM) and separator contributes greatly to the material cost occupying 50% and 41% of the total cost, respectively. Therefore, future studies focusing on creating low cost AEMs and separators will pave the way for the large-scale application of SWB-D.
URI
https://scholarworks.unist.ac.kr/handle/201301/53423
URL
https://onlinelibrary.wiley.com/doi/10.1002/advs.202101289
DOI
10.1002/advs.202101289
ISSN
2198-3844
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