{"title":"Enhanced low-field energy storage performance in Nd3+-doped (Bi0.40K0.2Na0.2Sr0.2)TiO3 high-entropy ceramics","authors":"Jiawei Lin, Tianyu Liu, Dongdong Meng, Qiang He, Wenhui Ye, Jinxu Ma, Kepi Chen","doi":"10.1111/jace.20156","DOIUrl":null,"url":null,"abstract":"<p>The burgeoning requirement for compact electronic devices has intensified research into lead-free dielectric ceramics that offer superior recoverable energy storage density and efficiency at low electric fields. In this study, we report the synthesis of Nd<sup>3+</sup>-doped (Bi<sub>0.4</sub>K<sub>0.2</sub>Na<sub>0.2</sub>Sr<sub>0.2</sub>)TiO<sub>3</sub> perovskite ceramics via the solid-state reaction technique. The synthesized ceramics adopted a tetragonal crystal structure. As the concentration of Nd<sup>3+</sup> ions increased, both the maximum dielectric constant (<i>ε</i><sub>m</sub>) and its corresponding temperature (<i>T</i><sub>m</sub>) decrease. The incorporation of Nd<sup>3+</sup> ions perturbed the long-range ferroelectric order, leading to diminished maximum polarization (<i>P</i><sub>m</sub>) and remanent polarization (<i>P</i><sub>r</sub>). The ceramics achieved optimal properties with 12 mol% Nd<sup>3+</sup> doping, showcasing a significant recoverable energy storage density of 1.50 J/cm<sup>3</sup> at a low electric field of 140 kV/cm, along with an exceptional storage efficiency of 94.6%. This research not only highlights a promising candidate for dielectric materials in low electric field applications but also introduces an innovative approach to enhance energy storage performance.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 2","pages":""},"PeriodicalIF":3.5000,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the American Ceramic Society","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/jace.20156","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
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Abstract
The burgeoning requirement for compact electronic devices has intensified research into lead-free dielectric ceramics that offer superior recoverable energy storage density and efficiency at low electric fields. In this study, we report the synthesis of Nd3+-doped (Bi0.4K0.2Na0.2Sr0.2)TiO3 perovskite ceramics via the solid-state reaction technique. The synthesized ceramics adopted a tetragonal crystal structure. As the concentration of Nd3+ ions increased, both the maximum dielectric constant (εm) and its corresponding temperature (Tm) decrease. The incorporation of Nd3+ ions perturbed the long-range ferroelectric order, leading to diminished maximum polarization (Pm) and remanent polarization (Pr). The ceramics achieved optimal properties with 12 mol% Nd3+ doping, showcasing a significant recoverable energy storage density of 1.50 J/cm3 at a low electric field of 140 kV/cm, along with an exceptional storage efficiency of 94.6%. This research not only highlights a promising candidate for dielectric materials in low electric field applications but also introduces an innovative approach to enhance energy storage performance.
期刊介绍：
The Journal of the American Ceramic Society contains records of original research that provide insight into or describe the science of ceramic and glass materials and composites based on ceramics and glasses. These papers include reports on discovery, characterization, and analysis of new inorganic, non-metallic materials; synthesis methods; phase relationships; processing approaches; microstructure-property relationships; and functionalities. Of great interest are works that support understanding founded on fundamental principles using experimental, theoretical, or computational methods or combinations of those approaches. All the published papers must be of enduring value and relevant to the science of ceramics and glasses or composites based on those materials.
Papers on fundamental ceramic and glass science are welcome including those in the following areas:
Enabling materials for grand challenges[...]
Materials design, selection, synthesis and processing methods[...]
Characterization of compositions, structures, defects, and properties along with new methods [...]
Mechanisms, Theory, Modeling, and Simulation[...]
JACerS accepts submissions of full-length Articles reporting original research, in-depth Feature Articles, Reviews of the state-of-the-art with compelling analysis, and Rapid Communications which are short papers with sufficient novelty or impact to justify swift publication.
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