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DC poleHodnotaJazyk
dc.contributor.authorMazúr, Petr
dc.contributor.authorCharvát, Jiří
dc.contributor.authorMrlík, Jindřich
dc.contributor.authorPocedič, Jaromír
dc.contributor.authorAkrman, Jiří
dc.contributor.authorKubáč, Lubomír
dc.contributor.authorŘeháková, Barbora
dc.contributor.authorKosek, Juraj
dc.date.accessioned2022-02-28T11:00:27Z-
dc.date.available2022-02-28T11:00:27Z-
dc.date.issued2021
dc.identifier.citationMAZÚR, P. CHARVÁT, J. MRLÍK, J. POCEDIČ, J. AKRMAN, J. KUBÁČ, L. ŘEHÁKOVÁ, B. KOSEK, J. Evaluation of Electrochemical Stability of Sulfonated Anthraquinone-Based Acidic Electrolyte for Redox Flow Battery Application. MOLECULES, 2021, roč. 26, č. 9, s. nestránkováno. ISSN: 1420-3049cs
dc.identifier.issn1420-3049
dc.identifier.uri2-s2.0-85105157391
dc.identifier.urihttp://hdl.handle.net/11025/47046
dc.format15 s.cs
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherMDPIen
dc.relation.ispartofseriesMOLECULESen
dc.rights© authorsen
dc.titleEvaluation of Electrochemical Stability of Sulfonated Anthraquinone-Based Acidic Electrolyte for Redox Flow Battery Applicationen
dc.typečlánekcs
dc.typearticleen
dc.rights.accessopenAccessen
dc.type.versionpublishedVersionen
dc.description.abstract-translatedDespite intense research in the field of aqueous organic redox flow batteries, low molecular stability of electroactive compounds limits further commercialization. Additionally, currently used methods typically cannot differentiate between individual capacity fade mechanisms, such as degradation of electroactive compound and its cross-over through the membrane. We present a more complex method for in situ evaluation of (electro)chemical stability of electrolytes using a flow electrolyser and a double half-cell including permeation measurements of electrolyte cross-over through a membrane by a UV–VIS spectrometer. The method is employed to study (electro)chemical stability of acidic negolyte based on an anthraquinone sulfonation mixture containing mainly 2,6- and 2,7-anthraquinone disulfonic acid isomers, which can be directly used as an RFB negolyte. The effect of electrolyte state of charge (SoC), current load and operating temperature on electrolyte stability is tested. The results show enhanced capacity decay for fully charged electrolyte (0.9 and 2.45% per day at 20 ◦C and 40 ◦C, respectively) while very good stability is observed at 50% SoC and lower, even at 40 ◦C and under current load (0.02% per day). HPLC analysis conformed deep degradation of AQ derivatives connected with the loss of aromaticity. The developed method can be adopted for stability evaluation of electrolytes of various organic and inorganic RFB chemistriesen
dc.subject.translatedredox flow batteryen
dc.subject.translatedaqueous organic electrolyteen
dc.subject.translatedanthraquinone disulfonic aciden
dc.subject.translatedcapacity decayen
dc.subject.translatedelectrolyte cross-overen
dc.identifier.doi10.3390/molecules26092484
dc.type.statusPeer-revieweden
dc.identifier.document-number650679000001
dc.identifier.obd43934984
dc.project.IDTK02030001/Vývoj pokročilých průtočných elektrochemických úložišť energiecs
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