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dc.contributor.authorMarocco, Paolo
dc.contributor.authorSundseth, Kyrre
dc.contributor.authorAarhaug, Thor Anders
dc.contributor.authorLanzini, Andrea
dc.contributor.authorSantarelli, Massimo
dc.contributor.authorBarnett, Alejandro Oyarce
dc.contributor.authorThomassen, Magnus
dc.date.accessioned2021-08-18T09:09:10Z
dc.date.available2021-08-18T09:09:10Z
dc.date.created2020-11-24T10:30:35Z
dc.date.issued2021
dc.identifier.citationJournal of Power Sources. 2021, 483 .en_US
dc.identifier.issn0378-7753
dc.identifier.urihttps://hdl.handle.net/11250/2770038
dc.description.abstractThis work investigates the online monitoring of fluoride ion concentration in proton exchange membrane water electrolysers (PEMWE) effluent water using an automated ion chromatography (IC) setup. Prototype catalyst coated membranes (CCMs) with different thicknesses have been tested and fluoride measurements under different operating conditions at both single cell and stack level have been carried out. The study reports the impact of both current density and temperature on the cathodic fluoride concentrations showing a maximum at low current densities, at around 0.4 A/cm2 for the single cells, and at 0.2–0.4 A/cm2 for the short stack. It is also reported that higher PEMWE working temperature has an adverse effect on the membrane stability, resulting in a significant increase of the fluoride release at the cathode outlet. Noticeably, CCMs with reduced membrane thickness exhibited lower values of area-specific fluoride release rates with respect to thicker CCMs. Finally, the study also reports that fluoride concentrations and water conductivity are very well correlated, displaying a linear correlation. This new finding could represent a low cost and straightforward method to obtain quantitative information about membrane degradation rates in larger commercial PEMWE systems.en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.no*
dc.subjectThin perfluorinated sulfonic acid membranesen_US
dc.subjectMembrane chemical degradationIon chromatographyen_US
dc.subjectFluoride releaseen_US
dc.subjectPEM electrolysisen_US
dc.subjectHydrogenen_US
dc.titleOnline measurements of fluoride ions in proton exchange membrane water electrolysis through ion chromatographyen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionacceptedVersionen_US
dc.rights.holderThis is the author accepted manuscript. CC BY-NC-ND. AAM open access from 2022-11-21en_US
dc.source.pagenumber10en_US
dc.source.volume483en_US
dc.source.journalJournal of Power Sourcesen_US
dc.identifier.doi10.1016/j.jpowsour.2020.229179
dc.identifier.cristin1851458
dc.relation.projectNorges forskningsråd: 245678en_US
dc.relation.projectNorges forskningsråd: 296303en_US
dc.relation.projectNorges forskningsråd: 257653en_US
dc.source.articlenumber229179en_US
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal