Effect of Mg and Ca precipitates in the stability of Fe-Mn-Ni anodes used in alkaline seawater electrolysis

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dc.contributor.authorMaril, Marisol
dc.contributor.authorDelplancke, Jean-Luc
dc.contributor.authorSalvo, Christopher
dc.contributor.authorHevia, Samuel
dc.contributor.authorAlvear, Tomas
dc.contributor.authorCarrasco, Claudia
dc.date.accessioned2025-01-20T16:13:49Z
dc.date.available2025-01-20T16:13:49Z
dc.date.issued2024
dc.description.abstractThis work investigates the effect of Mg and Ca precipitates on the electrochemical performance of Fe-Mn-Nibased anodes produced through powder metallurgy in simulated and real alkaline seawater. The electrodes that exhibited the best performance in simulated seawater were those containing 60 %Fe-40 %Ni and 15 %Fe-15 %Mn-70 %Fe, both with an overpotential for the oxygen evolution reaction of 370 mV at 10 mA/cm2 and Tafel slopes of 45 and 53 mV/dec, respectively. However, when real alkaline seawater was used as electrolyte, the electrocatalytic ability of these electrodes decreased; the presence of Ca2+ was identified as a significant factor promoting pitting corrosion. The study concludes that a comprehensive investigation into the individual effect of seawater ions on electrode performance is necessary.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.jelechem.2024.118422
dc.identifier.eissn1873-2569
dc.identifier.issn1572-6657
dc.identifier.urihttps://doi.org/10.1016/j.jelechem.2024.118422
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90407
dc.identifier.wosidWOS:001263861000001
dc.language.isoen
dc.revistaJournal of electroanalytical chemistry
dc.rightsacceso restringido
dc.subjectSeawater electrolysis
dc.subjectOxygen evolution reaction
dc.subjectAlkaline electrolysis
dc.subject.ods07 Affordable and Clean Energy
dc.subject.odspa07 Energía asequible y no contaminante
dc.titleEffect of Mg and Ca precipitates in the stability of Fe-Mn-Ni anodes used in alkaline seawater electrolysis
dc.typeartículo
dc.volumen967
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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