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High‐Entropy Sulfides as Highly Effective Catalysts for the Oxygen Evolution Reaction

Lin, Ling ; Ding, Ziming ; Karkera, Guruprakash ; Diemant, Thomas ; Kante, Mohana V. ; Agrawal, Daisy ; Hahn, Horst ; Aghassi‐Hagmann, Jasmin ; Fichtner, Maximilian ; Breitung, Ben ; Schweidler, Simon (2024)
High‐Entropy Sulfides as Highly Effective Catalysts for the Oxygen Evolution Reaction.
In: Small Structures, 2023, 4 (9)
doi: 10.26083/tuprints-00024687
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Item Type: Article
Type of entry: Secondary publication
Title: High‐Entropy Sulfides as Highly Effective Catalysts for the Oxygen Evolution Reaction
Language: English
Date: 9 February 2024
Place of Publication: Darmstadt
Year of primary publication: 2023
Place of primary publication: Weinheim
Publisher: Wiley-VCH
Journal or Publication Title: Small Structures
Volume of the journal: 4
Issue Number: 9
Collation: 9 Seiten
DOI: 10.26083/tuprints-00024687
Corresponding Links:
Origin: Secondary publication DeepGreen
Abstract:

With respect to efficient use of diminishing or harder to reach energy resources, the catalysis of processes that will otherwise require high overpotentials is a very important application in today's world. As a newly developed class of materials, high‐entropy sulfides (HESs) are promising electrocatalysts for a variety of different reactions. In this report, HESs containing five or six transition metals are synthesized in a one‐step mechanochemical process. Seven HESs of Pnma (M:S≈1:1) and three Pa‐3 (M:S = 1:2) structures are investigated as electrocatalysts for the oxygen evolution reaction (OER). The performances and properties of the HESs with different compositions and structures are compared with each other and with commercial IrO₂ as reference material, in terms of OER overpotential, Tafel slope, electrochemically active surface area, ionic conductivity, and durability. The structural and chemical properties of these HESs are determined by X‐ray diffraction, transmission electron microscopy, scanning electron microscopy, X‐ray photoelectron spectroscopy, and energy‐dispersive X‐ray spectroscopy. Most of the HESs show excellent and promising performance as OER electrocatalysts under alkaline conditions, and outperform the reference OER catalyst IrO₂.

Uncontrolled Keywords: catalysts, high-entropy materials, high-entropy sulfides, oxygen evolution reaction
Identification Number: Artikel-ID: 2300012
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-246872
Classification DDC: 600 Technology, medicine, applied sciences > 660 Chemical engineering
Divisions: 11 Department of Materials and Earth Sciences > Material Science > In-situ electron microscopy
11 Department of Materials and Earth Sciences > Material Science > Joint Research Laboratory Nanomaterials
11 Department of Materials and Earth Sciences > Material Science > Structure Research
Date Deposited: 09 Feb 2024 13:45
Last Modified: 09 Feb 2024 13:45
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/24687
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