Abstract
The successful integration or hybridization of perovskite oxides with their halide cousins would enable the formation of both multi-anionic and multi-cationic solid solutions with unique metal-ion sites and synergistic properties that could potentially surpass the performance of classic perovskites. However, such solid solutions had not been produced previously owing to their distinct formation energies and different synthesis conditions. Solid solutions combining perovskite oxides with fluorides were produced in this study by mechanochemical synthesis. The obtained perovskite oxide–halide solid solutions had highly mixed elements and valences, uniform element distributions, and single-phase crystalline structures. The solid solution with an optimized combination of oxides and fluorides exhibited enhanced catalytic performance in the oxygen evolution reaction.
| Original language | English |
|---|---|
| Pages (from-to) | 9953-9958 |
| Number of pages | 6 |
| Journal | Angewandte Chemie - International Edition |
| Volume | 60 |
| Issue number | 18 |
| DOIs | |
| State | Published - Apr 26 2021 |
Funding
This research was supported as part of the Fluid Interface Reactions, Structures and Transport (FIRST) Center, an Energy Frontier Research Center funded by U.S. Department of Energy, Office of Science, Basic Energy Sciences at Oak Ridge National Laboratory under Contract No. DE-AC05-00OR22725. We acknowledge the use of facilities within the Eyring Materials Center at Arizona State University supported in part by NNCI-ECCS-1542160.
Keywords
- high-entropy materials
- mechanochemistry
- oxygen evolution reaction
- perovskite phases
- solid solutions