Bitte benutzen Sie diese Referenz, um auf diese Ressource zu verweisen: doi:10.22028/D291-28917
Volltext verfügbar? / Dokumentlieferung
Titel: Confined Redox Reactions of Iodide in Carbon Nanopores for Fast and Energy-Efficient Desalination of Brackish Water and Seawater
VerfasserIn: Lee, Juhan
Srimuk, Pattarachai
Carpier, Sidonie
Choi, Jaehoon
Zornitta, Rafael Linzmeyer
Kim, Choonsoo
Aslan, Mesut
Presser, Volker
Sprache: Englisch
Titel: ChemSusChem : chemistry & sustainability, energy & materials
Bandnummer: 11
Heft: 19
Startseite: 3460
Endseite: 3472
Verlag/Plattform: Wiley
Erscheinungsjahr: 2018
Dokumenttyp: Journalartikel / Zeitschriftenartikel
Abstract: Faradaic deionization is a promising new seawater desalination technology with low energy consumption. One drawback is the low water production rate as a result of the limited kinetics of the ion intercalation and insertion processes. We introduce the redox activities of iodide confined in carbon nanopores for electrochemical desalination. A fast desalination process was enabled by diffusionless redox kinetics governed by thin-layer electrochemistry. A cell was designed with an activated carbon cloth electrode in NaI aqueous solution, which was separated from the feedwater channel by a cation-exchange membrane. Coupled with an activated carbon counter electrode and an anion-exchange membrane, the half-cell in NaI with a cation-exchange membrane maintained performance even at a high current of 2.5 A g-1 (21 mA cm-2 ). The redox activities of iodide allowed a high desalination capacity of 69 mg g-1 (normalized by the mass of the working electrode) with stable performance over 120 cycles. Additionally, we provide a new analytical method for unique performance evaluation under single-pass flow conditions regarding the water production rate and energy consumption. Our cell concept provides flexible performance for low and high salinity and, thus, enables the desalination of brackish water or seawater. Particularly, we found a low energy consumption (1.63 Wh L-1 ) for seawater desalination and a high water production rate (25 L m-2  h-1 ) for brackish water.
DOI der Erstveröffentlichung: 10.1002/cssc.201801538
URL der Erstveröffentlichung: https://chemistry-europe.onlinelibrary.wiley.com/doi/full/10.1002/cssc.201801538
Link zu diesem Datensatz: hdl:20.500.11880/27823
http://dx.doi.org/10.22028/D291-28917
ISSN: 1864-564X
Datum des Eintrags: 17-Sep-2019
Fakultät: NT - Naturwissenschaftlich- Technische Fakultät
Fachrichtung: NT - Materialwissenschaft und Werkstofftechnik
Professur: NT - Prof. Dr. Volker Presser
Sammlung:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

Dateien zu diesem Datensatz:
Es gibt keine Dateien zu dieser Ressource.


Alle Ressourcen in diesem Repository sind urheberrechtlich geschützt.