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

Schweidler, Simon ; Tang, Yushu ; Lin, Ling ; Karkera, Guruprakash ; Alsawaf, Alaa ; Bernadet, Lucile ; Breitung, Ben ; Hahn, Horst ; Fichtner, Maximilian ; Tarancón, Albert ; Botros, Miriam (2022)
Synthesis of perovskite-type high-entropy oxides as potential candidates for oxygen evolution.
In: Frontiers in Energy Research, 2022, 10
doi: 10.26083/tuprints-00023010
Article, Secondary publication, Publisher's Version

Abstract

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 (Gd₀.₂La₀.₂₋ₓ SrₓNd₀.₂Sm₀.₂Y₀.₂) (Co₀.₂Cr₀.₂Fe₀.₂Mn₀.₂Ni₀.₂)O₃ (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. To exploit the novel materials for a variety of energy applications, their catalytic activity for oxygen evolution reaction was characterized. This paves the way for their integration into, e.g., regenerative fuel cells and metal air batteries.

Item Type: Article
Erschienen: 2022
Creators: Schweidler, Simon ; Tang, Yushu ; Lin, Ling ; Karkera, Guruprakash ; Alsawaf, Alaa ; Bernadet, Lucile ; Breitung, Ben ; Hahn, Horst ; Fichtner, Maximilian ; Tarancón, Albert ; Botros, Miriam
Type of entry: Secondary publication
Title: Synthesis of perovskite-type high-entropy oxides as potential candidates for oxygen evolution
Language: English
Date: 2022
Place of Publication: Darmstadt
Year of primary publication: 2022
Publisher: Frontiers Media S.A.
Journal or Publication Title: Frontiers in Energy Research
Volume of the journal: 10
Collation: 13 Seiten
DOI: 10.26083/tuprints-00023010
URL / URN: https://tuprints.ulb.tu-darmstadt.de/23010
Corresponding Links:
Origin: Secondary publication DeepGreen
Abstract:

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 (Gd₀.₂La₀.₂₋ₓ SrₓNd₀.₂Sm₀.₂Y₀.₂) (Co₀.₂Cr₀.₂Fe₀.₂Mn₀.₂Ni₀.₂)O₃ (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. To exploit the novel materials for a variety of energy applications, their catalytic activity for oxygen evolution reaction was characterized. This paves the way for their integration into, e.g., regenerative fuel cells and metal air batteries.

Uncontrolled Keywords: high-entropy materials, oxygen evolution reaction (OER), perovskite-type oxide, catalysis, water splitting, energy storage and conversion
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-230106
Classification DDC: 600 Technology, medicine, applied sciences > 660 Chemical engineering
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Joint Research Laboratory Nanomaterials
Date Deposited: 19 Dec 2022 12:16
Last Modified: 20 Dec 2022 13:50
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