{"title":"通过协同高熵和超准电松弛策略实现基于 BaTiO3 的多层电容器的卓越储能性能","authors":"","doi":"10.1016/j.jmat.2024.03.005","DOIUrl":null,"url":null,"abstract":"<div><p>Dielectric capacitors with high energy storage performances are exceedingly desired for the next-generation advanced high/pulsed power devices that demand miniaturization and integration. However, poor energy-storage density (<em>U</em><sub>rec</sub>) and low efficiency (<em>η</em>) resulted from the large remanent polarization (<em>P</em><sub>r</sub>) and low breakdown strength (BDS), have been the major challenge for the application of dielectric capacitors. Herein, a high-entropy strategy with superparaelectric relaxor ferroelectrics (SP-RFE) was adopted to achieve extremely low <em>P</em><sub>r</sub> and high BDS in BaTiO<sub>3</sub> system, simultaneously. Due to the high BDS ∼800 kV/cm and low <em>P</em><sub>r</sub> <strong>∼</strong>0.58 μC/cm<sup>2</sup>, high-entropy SP-RFE (La<sub>0.05</sub>Ba<sub>0.18</sub>Sr<sub>0.18</sub>K<sub>0.115</sub>Na<sub>0.115</sub>Ca<sub>0.18</sub>Bi<sub>0.18</sub>)TiO<sub>3</sub> (LBSKNCBT) MLCCs exhibited high <em>U</em><sub>rec</sub> ∼6.63 J/cm<sup>3</sup> and excellent <em>η</em> ∼ 96%. What's more, LBSKNCBT MLCCs with high-entropy and SP-RFE characteristic also possess a good temperature and frequency stability. In a word, this work offers an excellent paradigm for achieving good energy-storage properties of BaTiO<sub>3</sub>-based dielectric capacitors to meet the demanding requirements of advanced energy storage applications.</p></div>","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":"11 1","pages":"Article 100860"},"PeriodicalIF":8.4000,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2352847824000650/pdfft?md5=db4b5d7f279abe074d492bcedb27cd7a&pid=1-s2.0-S2352847824000650-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Excellent energy storage performances for BaTiO3-based multilayer capacitors through synergistic high-entropy and superparaelectric-relaxor strategy\",\"authors\":\"\",\"doi\":\"10.1016/j.jmat.2024.03.005\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Dielectric capacitors with high energy storage performances are exceedingly desired for the next-generation advanced high/pulsed power devices that demand miniaturization and integration. However, poor energy-storage density (<em>U</em><sub>rec</sub>) and low efficiency (<em>η</em>) resulted from the large remanent polarization (<em>P</em><sub>r</sub>) and low breakdown strength (BDS), have been the major challenge for the application of dielectric capacitors. Herein, a high-entropy strategy with superparaelectric relaxor ferroelectrics (SP-RFE) was adopted to achieve extremely low <em>P</em><sub>r</sub> and high BDS in BaTiO<sub>3</sub> system, simultaneously. Due to the high BDS ∼800 kV/cm and low <em>P</em><sub>r</sub> <strong>∼</strong>0.58 μC/cm<sup>2</sup>, high-entropy SP-RFE (La<sub>0.05</sub>Ba<sub>0.18</sub>Sr<sub>0.18</sub>K<sub>0.115</sub>Na<sub>0.115</sub>Ca<sub>0.18</sub>Bi<sub>0.18</sub>)TiO<sub>3</sub> (LBSKNCBT) MLCCs exhibited high <em>U</em><sub>rec</sub> ∼6.63 J/cm<sup>3</sup> and excellent <em>η</em> ∼ 96%. What's more, LBSKNCBT MLCCs with high-entropy and SP-RFE characteristic also possess a good temperature and frequency stability. In a word, this work offers an excellent paradigm for achieving good energy-storage properties of BaTiO<sub>3</sub>-based dielectric capacitors to meet the demanding requirements of advanced energy storage applications.</p></div>\",\"PeriodicalId\":16173,\"journal\":{\"name\":\"Journal of Materiomics\",\"volume\":\"11 1\",\"pages\":\"Article 100860\"},\"PeriodicalIF\":8.4000,\"publicationDate\":\"2024-04-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S2352847824000650/pdfft?md5=db4b5d7f279abe074d492bcedb27cd7a&pid=1-s2.0-S2352847824000650-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materiomics\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2352847824000650\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materiomics","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352847824000650","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Excellent energy storage performances for BaTiO3-based multilayer capacitors through synergistic high-entropy and superparaelectric-relaxor strategy
Dielectric capacitors with high energy storage performances are exceedingly desired for the next-generation advanced high/pulsed power devices that demand miniaturization and integration. However, poor energy-storage density (Urec) and low efficiency (η) resulted from the large remanent polarization (Pr) and low breakdown strength (BDS), have been the major challenge for the application of dielectric capacitors. Herein, a high-entropy strategy with superparaelectric relaxor ferroelectrics (SP-RFE) was adopted to achieve extremely low Pr and high BDS in BaTiO3 system, simultaneously. Due to the high BDS ∼800 kV/cm and low Pr∼0.58 μC/cm2, high-entropy SP-RFE (La0.05Ba0.18Sr0.18K0.115Na0.115Ca0.18Bi0.18)TiO3 (LBSKNCBT) MLCCs exhibited high Urec ∼6.63 J/cm3 and excellent η ∼ 96%. What's more, LBSKNCBT MLCCs with high-entropy and SP-RFE characteristic also possess a good temperature and frequency stability. In a word, this work offers an excellent paradigm for achieving good energy-storage properties of BaTiO3-based dielectric capacitors to meet the demanding requirements of advanced energy storage applications.
期刊介绍：
The Journal of Materiomics is a peer-reviewed open-access journal that aims to serve as a forum for the continuous dissemination of research within the field of materials science. It particularly emphasizes systematic studies on the relationships between composition, processing, structure, property, and performance of advanced materials. The journal is supported by the Chinese Ceramic Society and is indexed in SCIE and Scopus. It is commonly referred to as J Materiomics.
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