NiFe on CeO 2 , TiO 2 , and ZrO 2 Supports as Efficient Oxygen Evolution Reaction Catalysts in Alkaline Media
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Le résumé fourni par la source
High Resolution Image Download MS PowerPoint Slide The high cost and low energy efficiency of conventional water electrolysis methods continue to restrict the widespread adoption of green hydrogen. Anion exchange membrane (AEM) water electrolysis is a promising technology that can produce hydrogen using cost-effective transition-metal catalysts at high energy efficiency. Herein, we investigate the catalytic activity of nickel and iron nanoparticles dispersed on metal-oxide supports for the oxygen evolution reaction (OER), employing electrochemical testing with an anion exchange ionomer to evaluate their potential for application in AEM electrolyzers. We report the electrochemical performance of NiFe nanoparticles of varying Ni:Fe ratios on CeO 2 for OER reaction, assessing the overpotential, Tafel slope, and electrochemical stability of the catalysts. Our findings indicate that Ni 90 Fe 10 has the highest catalytic activity as well as stability. To further understand the role of different supports, we assess the electrocatalytic performance of Ni 90 Fe 10 nanoparticles on two more supports - TiO 2 and ZrO 2 . While CeO 2 has the lowest overpotential, the other supports also show high activity and good performance at high current densities. TiO 2 exhibits superior stability and its overpotential after chronopotentiometry measurements approaches that of CeO 2 at high current densities. These results underscore the critical role of iron addition in enhancing nickel nanoparticles’ catalytic activity and further emphasize the importance of metal oxide supports in improving catalyst stability and performance.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé, mais le titre doit être comparé manuellement.
- Titre Crossref
- NiFe on CeO <sub>2</sub> , TiO <sub>2</sub> , and ZrO <sub>2</sub> Supports as Efficient Oxygen Evolution Reaction Catalysts in Alkaline Media
- Date Crossref
- 24/02/2025
- Éditeur
- American Chemical Society (ACS)
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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University of Genoa Department of Chemistry and Industrial Chemistry pays non établi dans la noticeUniversité ou école supérieure
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Institute of Materials for Electronics and Magnetism pays non établi dans la noticeStructure de recherche
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Department of Chemistry and Industrial Chemistry pays non établi dans la noticeInstitution
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IMEM-CNR UOS Genoa pays non établi dans la noticeInstitution
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Department of Physics pays non établi dans la noticeInstitution
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H2 Energy SRL pays non établi dans la noticeInstitution
Department of Chemistry and Industrial Chemistry — University of Genoa, Institute of Materials for Electronics and Magnetism et Department of Chemistry and Industrial Chemistry, avec 3 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.