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Mechanochemical synthesis of novel rutile-type high entropy fluorides for electrocatalysis

Sukkurji, Parvathy Anitha 1; Cui, Yanyan 1; Lee, Seunghwa; Wang, Kai 1; Azmi, Raheleh 2; Sarkar, Abhishek 1; Indris, Sylvio 2; Bhattacharya, Subramshu S.; Kruk, Robert 1; Hahn, Horst 1; Wang, Qingsong 1; Botros, Miriam 1; Breitung, Ben 1
1 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)
2 Institut für Angewandte Materialien – Energiespeichersysteme (IAM-ESS), Karlsruher Institut für Technologie (KIT)

Multicomponent rutile (P4$_{2}$/mnm) structured fluorides, containing 4 to 7 transition metals (Co, Cu, Mg, Ni, Zn, Mn, and Fe) in equiatomic ratios, were synthesized using a simple mechanochemical approach. The high entropy fluorides were characterized using different techniques, all of which indicate that the high entropy fluorides tend to crystallize into a homogeneously mixed solid solution and single-phase structure. These high entropy fluorides represent an additional class of high entropy ceramics, which have recently attracted attention especially due to the development of high entropy oxides. With the introduction of these novel high entropy fluorides, similar interest could be generated due to the variety of different applications for fluoride materials and the improvements the high entropy concept might bring. Here we present an in-depth characterization study and the potential application of high entropy fluorides as a catalyst for the oxygen evolution reaction, in which the high entropy fluorides do show increased performance compared to a state-of-the-art catalyst for the oxygen evolution reaction, IrO$_{2}$, despite eliminating noble metal constituents.

Verlagsausgabe §
DOI: 10.5445/IR/1000131664
Veröffentlicht am 23.04.2021
DOI: 10.1039/d0ta10209a
Zitationen: 6
Web of Science
Zitationen: 5
Zitationen: 7
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Energiespeichersysteme (IAM-ESS)
Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2050-7488, 2050-7496
KITopen-ID: 1000131664
HGF-Programm 38.02.01 (POF IV, LK 01) Fundamentals and Materials
Erschienen in Journal of Materials Chemistry A
Verlag Royal Society of Chemistry (RSC)
Band 9
Heft 14
Seiten 8998-9009
Nachgewiesen in Web of Science
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