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Kim, Youngsik
YK Research
Research Interests
  • Ionic conducting ceramic electrolyte membranes, energy conversion and storage materials and devices

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Hybrid seawater desalination-carbon capture using modified seawater battery system

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Title
Hybrid seawater desalination-carbon capture using modified seawater battery system
Author
Bae, HyuntaePark, Jeong-SunSenthilkumar, S.T.Hwang, Soo MinKim, Youngsik
Keywords
Seawater battery; Electrochemical energy storage; Seawater desalination; CO2 capture; Carbonation
Issue Date
201901
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF POWER SOURCES, v.410, no., pp.99 - 105
Abstract
The water and carbon cycles are central to the Earth's ecosystem, enabling the sustainable development of human societies. To mitigate the global issues of water shortages and climate change, we report a new electrochemical system that fulfills two functions—seawater desalination and carbon dioxide air-capture—during the charge and discharge processes. The seawater desalination-carbon capture system utilizes a seawater battery platform, consisting of three major compartments (desalination, sodium-collection, and carbon-capture), which are separated by sodium superionic conducting ceramic membranes. It is found that the concentrations of sodium ions and chloride ions in fresh seawater (total dissolved solids ≈ 34,000 ppm) are significantly decreased by the charging of the seawater desalination-carbon capture system, resulting in brackish water (total dissolved solids ≈ 7000 ppm). The discharge process induces the air-capture of ambient carbon dioxide gases through carbonation reactions, which is demonstrated by the carbon dioxide gas removal in this compartment. The hybrid system suggests a new electrochemical approach for both desalination and carbon capture.
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DOI
http://dx.doi.org/10.1016/j.jpowsour.2018.11.009
ISSN
0378-7753
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