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The Influence of Some Electrolyte Additives on the Electrochemical Performance of Fe/Fe2+Redox Reactions for Iron/Iron Redox Flow Batteries

Noack, Jens; Berkers, Max; Ortner, Jens; Pinkwart, Karsten

Abstract:
For the application in Fe/Fe-Redox-Flow-Batteries some important factors concerning the composition of the electrolyte and the influence of temperature on the properties of half-cell reactions were investigated. In contrast to previous investigations, the measurements were performed more realistically on deposited iron and by means of linear sweep voltammetry. Since the distinction between cathodic iron deposition and hydrogen generation is not possible by convention, with quantitative stripping analysis on a rotating disk electrode, partly a method was used to distinguish between these two reactions. The investigations were carried out at temperatures up to 80 °C, with addition of 10 mM of chlorides of Bi, Cu, In, Pb, Sn, Tl, Cd, Sb and Hg and different supporting salts of NH$_{4}$$^{+}$, Li$^{+}$, K$^{+}$. Na$^{+}$, Cs$^{+}$, Mg$^{2+}$ and Al$^{3+}$.


Verlagsausgabe §
DOI: 10.5445/IR/1000133578
Veröffentlicht am 03.06.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Mechanische Verfahrenstechnik und Mechanik (MVM)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 0013-4651, 0096-4743, 0096-4786, 1945-6859, 1945-7111, 2156-7395
KITopen-ID: 1000133578
Erschienen in Journal of the Electrochemical Society
Verlag Electrochemical Society
Band 168
Heft 4
Seiten Art.-Nr.: 040529
Nachgewiesen in Scopus
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