Please use this identifier to cite or link to this item: doi:10.22028/D291-28785
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Title: High Electrochemical Seawater Desalination Performance Enabled by an Iodide Redox Electrolyte Paired with a Sodium Superionic Conductor
Author(s): Lee, Juhan
Srimuk, Pattarachai
Zornitta, Rafael L.
Aslan, Mesut
Mehdi, B. Layla
Presser, Volker
Language: English
Title: ACS Sustainable Chemistry & Engineering
Volume: 7
Issue: 11
Startpage: 10132
Endpage: 10142
Publisher/Platform: American Chemical Society (ACS)
Year of Publication: 2019
Publikation type: Journal Article
Abstract: In recent years, a wealth of new desalination technologies based on reversible electrochemical redox reactions has emerged. Among them, the use of redox-active electrolytes is highly attractive due to the high production rate and energy efficiency. Yet, these technologies suffer from the imperfect permselectivity of polymer membranes. Our present work demonstrates the promising desalination performance of a sodium superionic conductor (NASICON) for selective removal of sodium against iodide in a half-cell configuration consisting of an activated carbon electrode in aqueous 600 mM NaI solution. For feedwater with aqueous 600 mM NaCl, the desalination cell exhibited a stable performance over a month with more than 400 operation cycles with the aid of high sodium permselectivity of the NASICON membrane against iodide (99.9–100%). The cell exhibited a maximum sodium removal capacity of 69 ± 4 mg/g (equivalent to the NaCl salt uptake capacity of 87 ± 4 mg/g) with a charge efficiency of 81 ± 3%.
DOI of the first publication: 10.1021/acssuschemeng.9b01704
URL of the first publication:
Link to this record: hdl:20.500.11880/27735
ISSN: 2168-0485
Date of registration: 10-Sep-2019
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Materialwissenschaft und Werkstofftechnik
Professorship: NT - Prof. Dr. Volker Presser
Collections:UniBib – Die Universitätsbibliographie

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