Research Progress on Preparation and Application of High-entropy Perovskite Oxide Ceramics
ZHANG Aidi1, GUO Hongfei1,2,*, ZHAO Min1, SHI Yumin1, ZUO Zhen1
1 School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China 2 Institute of Advanced Materials and Energy, Inner Mongolia Institute of Science and Technology, Hohhot 010020, China
Abstract: As a new type of functional material, high-entropy perovskite oxide ceramics have attracted extensive attention from scholars at home and abroad due to their excellent dielectric properties, excellent energy storage performance and significant catalytic activity arising from the high-entropy effect. In this paper, we first summarize the high-entropy perovskite oxide ceramic materials and introduce their crystal structure basis and design methods. Then, a variety of preparation methods were discussed, including the traditional solid-phase reaction method, the sol-gel method, as well as the advanced flash firing method and discharge plasma sintering technology. In addition, the excellent properties of high-entropy perovskite oxide ceramics are systematically introduced, covering electricity, magnetism, thermal, dielectric and energy storage, etc., which make them show broad application prospects in many fields such as electromagnetic wave absorbing materials, solid oxide fuel cells, dielectric and energy storage materials, etc. Finally, the future research directions of high-entropy perovskite oxide ceramics were discussed, including the development of new systems, in-depth theoretical calculations, and the expansion of application fields.
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