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Synthesis of perovskite-type high-entropy oxides as potential candidates for oxygen evolution

Schweidler, Simon ORCID iD icon 1; Tang, Yushu ORCID iD icon 1; Lin, Ling 1; Karkera, Guruprakash 2; Alsawaf, Alaa 1; Bernadet, Lucile; Breitung, Ben ORCID iD icon 1; Hahn, Horst 1; Fichtner, Maximilian 1; Tarancón, Albert; Botros, Miriam 1
1 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)
2 Helmholtz-Institut Ulm (HIU), Karlsruher Institut für Technologie (KIT)


High-entropy materials offer a wide range of possibilities for synthesizing new functional ceramics for different applications. Many synthesis methods have been explored to achieve a single-phase structure incorporating several different elements, yet a comparison between the synthesis methods is crucial to identify the new dimension such complex ceramics bring to material properties. As known for ceramic materials, the synthesis procedure usually has a significant influence on powder morphology, elemental distribution, particle size and powder processability. Properties that need to be tailored according to specific applications. Therefore, in this study perovskite-type high-entropy materials (Gd$_{0.2}$La$_{0.2–x}$Sr$_x$Nd$_{0.2}$Sm$_{0.2}$Y$_{0.2}$) (Co$_{0.2}$Cr$_{0.2}$Fe$_{0.2}$Mn$_{0.2}$Ni$_{0.2}$)O$_3$ (x = 0 and x = 0.2) are synthesized for the first time using mechanochemical synthesis and a modified Pechini method. The comparison of different syntheses allows, not only tailoring of the constituent elements of high-entropy materials, but also to optimize the synthesis method as needed to overcome limitations of conventional ceramics. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000154472
Veröffentlicht am 13.01.2023
DOI: 10.3389/fenrg.2022.983979
Zitationen: 6
Zitationen: 7
Cover der Publikation
Zugehörige Institution(en) am KIT Helmholtz-Institut Ulm (HIU)
Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 12.2022
Sprache Englisch
Identifikator ISSN: 2296-598X
KITopen-ID: 1000154472
HGF-Programm 43.31.01 (POF IV, LK 01) Multifunctionality Molecular Design & Material Architecture
Weitere HGF-Programme 38.02.01 (POF IV, LK 02) Fundamentals and Materials
Erschienen in Frontiers in Energy Research
Verlag Frontiers Media SA
Band 10
Seiten Art.-Nr.: 983979
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 02.12.2022
Schlagwörter high-entropy materials, oxygen evolution reaction (OER), perovskite-type oxide, catalysis, water splitting, energy storage and conversion;, 2015-013-006397 FIB TEM
Nachgewiesen in Web of Science
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