Mechanochemical synthesis of novel rutile-type high entropy fluorides for electrocatalysis
Open Access
- 8 February 2021
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry A
- Vol. 9 (14), 8998-9009
- https://doi.org/10.1039/d0ta10209a
Abstract
Multicomponent rutile (P42/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, IrO2, despite eliminating noble metal constituents.Funding Information
- Helmholtz Association
- China Scholarship Council
- H2020 Marie Skłodowska-Curie Actions (838367)
- H2020 European Research Council (730957, EnABLES)
- Deutsche Forschungsgemeinschaft (SE 1407/4-2)
- Ministerium für Wissenschaft, Forschung und Kunst Baden-Württemberg
- Karlsruher Institut für Technologie
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