Ultrahigh energy storage in high-entropy ceramic capacitors with polymorphic relaxor phase.
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| Title: | Ultrahigh energy storage in high-entropy ceramic capacitors with polymorphic relaxor phase. |
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| Authors: | Min Zhang, Shun Lan, Yang, Bing B., Hao Pan, Liu, Yi Q., Zhang, Qing H., Qi, Jun L., Di Chen, Hang Su, Di Yi, Yang, Yue Y., Rui Wei, Cai, Hong D., Han, Hao J., Lin Gu, Ce-Wen Nan, Yuan-Hua Lin |
| Source: | Science (pre-March 2025). 4/12/2024, Vol. 384 Issue 6692, p185-189. 5p. 4 Diagrams. |
| Subjects: | Energy storage, Barium titanate, Relaxor ferroelectrics, Energy density, Ceramic capacitors, Electronic equipment, Entropy, Electronic systems |
| Abstract: | Ultrahigh–power-density multilayer ceramic capacitors (MLCCs) are critical components in electrical and electronic systems. However, the realization of a high energy density combined with a high efficiency is a major challenge for practical applications. We propose a high-entropy design in barium titanate (BaTiO3)–based lead-free MLCCs with polymorphic relaxor phase. This strategy effectively minimizes hysteresis loss by lowering the domain-switching barriers and enhances the breakdown strength by the high atomic disorder with lattice distortion and grain refining. Benefiting from the synergistic effects, we achieved a high energy density of 20.8 joules per cubic centimeter with an ultrahigh efficiency of 97.5% in the MLCCs. This approach should be universally applicable to designing high-performance dielectrics for energy storage and other related functionalities. [ABSTRACT FROM AUTHOR] |
| Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
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| Abstract: | Ultrahigh–power-density multilayer ceramic capacitors (MLCCs) are critical components in electrical and electronic systems. However, the realization of a high energy density combined with a high efficiency is a major challenge for practical applications. We propose a high-entropy design in barium titanate (BaTiO3)–based lead-free MLCCs with polymorphic relaxor phase. This strategy effectively minimizes hysteresis loss by lowering the domain-switching barriers and enhances the breakdown strength by the high atomic disorder with lattice distortion and grain refining. Benefiting from the synergistic effects, we achieved a high energy density of 20.8 joules per cubic centimeter with an ultrahigh efficiency of 97.5% in the MLCCs. This approach should be universally applicable to designing high-performance dielectrics for energy storage and other related functionalities. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 00368075 |
| DOI: | 10.1126/science.adl2931 |
