Perovskites have shown tremendous promise as functional materials for several energy conversion and storage technologies, including rechargeable batteries, (electro)catalysts, fuel cells, and solar cells. Due to their excellent operational stability and performance, high-entropy perovskites (HEPs) have emerged as a new type of perovskite framework. Herein, this work reviews the recent progress in the development of HEPs, including synthesis methods and applications. Effective strategies for the design of HEPs through atomistic computations are also surveyed. Finally, an outlook of this field provides guidance for the development of new and improved HEPs.
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http://dx.doi.org/10.1002/smtd.202201138 | DOI Listing |
Materials (Basel)
November 2024
Department of Electrical Engineering, National Cheng Kung University, Tainan 70101, Taiwan.
Perovskite solar cells are among the most promising renewable energy devices, and enhancing their stability is crucial for commercialization. This research presents the use of L-Ergothioneine (L-EGT) as a passivation material in perovskite solar cells, strategically placed between the electron transport layer and the perovskite absorber layer to mitigate defect states at the heterojunction interface. Surface analysis reveals that introducing L-EGT passivation material significantly improves the quality of the perovskite film.
View Article and Find Full Text PDFJ Colloid Interface Sci
November 2024
Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China; Shenzhen Research Institute, China University of Geosciences, Shenzhen, 518057, China. Electronic address:
The application of solid oxide electrolysis cells (SOECs) for high-temperature CO reduction reaction (CORR) is constrained by the electrochemical activity and stability of the cathode materials. In this study, a series of iron-based perovskite oxides, designed by systematically varying A-site configurational entropy, are investigated as cathode materials for the CORR. Experimental results reveal that these high-entropy materials, derived from LaSrFeO (LSF), exhibit high electrocatalytic activity and durability.
View Article and Find Full Text PDFJ Chem Phys
November 2024
National Key Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100094, China.
Phys Chem Chem Phys
November 2024
Plasmonics and Perovskite Laboratory, Department of Materials Science and Engineering, IIT Kanpur, UP 208016, India.
Oxides are considered as promising thermoelectric materials due to their excellent thermal and chemical stability at elevated temperatures. However, their thermoelectric performances are hindered by high thermal conductivity due to the relatively simple structure compared to the layered or cage-like structure of intermetallics and chalcogenides. In this study, we have successfully crafted a novel cobaltate-based high-entropy oxide perovskite, (BaSrCaLaNa)CoO (BSCLN), based on detailed thermodynamic calculation.
View Article and Find Full Text PDFSmall
November 2024
Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China.
High-entropy perovskite oxides exhibit promising application prospects in the field of electrocatalysis, owing to their flexible elemental composition, plentiful active sites, and superior structural stability. Herein, high-entropy perovskite oxide nanotubes are prepared with La, Nd, Pr, Er, Eu at A-site by electrospinning as efficient electrocatalysts for nitrate reduction reaction (NORR). Electrochemical tests demonstrate that LaNdPrErEuCuO nanotubes (LNPEEC NTs) display outstanding NORR performance, achieving a NH Faraday efficiency (FE) of 100% at -0.
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