Show simple item record

Evaluation of Electrochemical Stability of Sulfonated Anthraquinone-Based Acidic Electrolyte for Redox Flow Battery Application

dc.contributor.authorPetr Mazúr
dc.contributor.authorJiří Charvát
dc.contributor.authorJindřich Mrlík
dc.contributor.authorJaromír Pocedič
dc.contributor.authorJiří Akrman
dc.contributor.authorLubomír Kubáč
dc.contributor.authorBarbora Řeháková
dc.contributor.authorJuraj Kosek
dc.contributor.otherDepartment of Chemical Engineering, University of Chemistry and Technology, Technická 5, Praha 6, 166 28 Prague, Czech Republic
dc.contributor.otherDepartment of Chemical Engineering, University of Chemistry and Technology, Technická 5, Praha 6, 166 28 Prague, Czech Republic
dc.contributor.otherDepartment of Chemical Engineering, University of Chemistry and Technology, Technická 5, Praha 6, 166 28 Prague, Czech Republic
dc.contributor.otherNew Technologies—Research Centre, University of West Bohemia, Univerzitní 8, 306 14 Plzeň, Czech Republic
dc.contributor.otherCentre for Organic Chemistry, Rybitvi 296, 533 54 Rybitvi, Czech Republic
dc.contributor.otherCentre for Organic Chemistry, Rybitvi 296, 533 54 Rybitvi, Czech Republic
dc.contributor.otherSynthesia, a.s., Semtín 103, 530 02 Pardubice, Czech Republic
dc.contributor.otherDepartment of Chemical Engineering, University of Chemistry and Technology, Technická 5, Praha 6, 166 28 Prague, Czech Republic
dc.date.accessioned2021-04-25T00:01:05Z
dc.date.available2025-10-02T03:30:13Z
dc.date.issued01-04-2021
dc.identifier.issn-
dc.identifier.urihttps://www.mdpi.com/1420-3049/26/9/2484
dc.description.abstractDespite 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 chemistries.
dc.format-
dc.language.isoEN
dc.publisherMDPI AG
dc.relation.uri['https://ejournal.iainutuban.ac.id/index.php/premiere', 'https://ejournal.iainutuban.ac.id/index.php/premiere/about/submissions', 'https://ejournal.iainutuban.ac.id/index.php/premiere/focusandscope']
dc.rightsCC BY-SA
dc.subject['primary education', 'islamic education', 'school management', 'primary education curricullum', 'learning and teaching', 'Education', 'L']
dc.subject.lccOrganic chemistry
dc.titleEvaluation of Electrochemical Stability of Sulfonated Anthraquinone-Based Acidic Electrolyte for Redox Flow Battery Application
dc.typeArticle
dc.description.keywordsredox flow battery
dc.description.keywordsaqueous organic electrolyte
dc.description.keywordsanthraquinone disulfonic acid
dc.description.keywordscapacity decay
dc.description.keywordselectrolyte cross-over
dc.description.pages-
dc.description.doi10.3390/molecules26092484
dc.title.journalMolecules
dc.identifier.e-issn1420-3049
dc.identifier.oaioai:doaj.org/journal:83b978cf75124bf391deeaffb9cc9917
dc.journal.infoVolume 26, Issue 9


This item appears in the following Collection(s)

Show simple item record