Evaluation of the Specific Capacitance of High-Entropy Oxide-Based Electrode Materials in View of Their Use for Water Desalination via Capacitive Method

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dc.contributor.authorTriolo, Claudia
dc.contributor.authorSantangelo, Saveria
dc.contributor.authorPetrovičovà, Beatrix
dc.contributor.authorMusolino, Maria Grazia
dc.contributor.authorRincón, Inés
dc.contributor.authorAtxirika, Ainhoa
dc.contributor.authorGil, Silvia
dc.contributor.authorBelaustegui, Yolanda
dc.date.accessioned2023-05-16T14:52:37Z
dc.date.available2023-05-16T14:52:37Z
dc.date.issued2023-01-04
dc.description.abstractWater pollution and scarcity are serious concerns for the growing world population. To meet the ever-pressing demand of fresh water, a variety of desalting techniques of seawater have been developed. Due to its environmental friendliness, high efficiency, easy regeneration of the electrodes, ambient operating pressure, and low operating potential suitable for the use in remote areas, the capacitive deionization (CDI) method is one of the most sustainable among them. This work focuses on the preparation of high-entropy oxides (HEOs) and carbon/HEO composites and the evaluation of their specific capacitance in view of their possible use as CDI electrode materials. CrMnFeCoNi-HEO, having spinel structure (sHEO), is obtained in the form of nanoparticles (NPs) and nanofibers (NFs) by the sol–gel method and electrospinning, respectively. Composite NFs with embedded sHEO NPs or MgCoNiCuZn-HEO NPs with rock-salt structure (rHEO) are also produced. In the 5–100 mV s−1 scan rate range, the specific capacitance improves in the order C/rHEO NFs (8–32 F g−1) ≅ sHEO NPs (9–32 F g−1) < sHEO NFs (8–43 F g−1) < C/sHEO NFs (12–66 F g−1). The highest capacitance is obtained when the beneficial contributions of the carbon matrix and smaller-sized HEO NPs are synergistically coupled.en
dc.description.sponsorshipThis research received no external fundingen
dc.identifier.citationTriolo, Claudia, Saveria Santangelo, Beatrix Petrovičovà, Maria Grazia Musolino, Inés Rincón, Ainhoa Atxirika, Silvia Gil, and Yolanda Belaustegui. 2023. "Evaluation of the Specific Capacitance of High-Entropy Oxide-Based Electrode Materials in View of Their Use for Water Desalination via Capacitive Method" Applied Sciences 13, no. 2: 721. https://doi.org/10.3390/app13020721en
dc.identifier.doi10.3390/app13020721en
dc.identifier.essn2076-3417en
dc.identifier.urihttp://hdl.handle.net/11556/1461
dc.issue.number2en
dc.journal.titleApplied Sciencesen
dc.language.isoengen
dc.page.initial721en
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)en
dc.rightsAttribution 4.0 International*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subject.keywordsHigh-entropy oxidesen
dc.subject.keywordsCarbon/High-entropy oxide compositesen
dc.subject.keywordsCapacitive deionizationen
dc.titleEvaluation of the Specific Capacitance of High-Entropy Oxide-Based Electrode Materials in View of Their Use for Water Desalination via Capacitive Methoden
dc.typejournal articleen
dc.volume.number13en
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