{"title":"通过调整畴结构和带隙，增强了bnt - lst基陶瓷的储能性能和热稳定性","authors":"Fang-Fang Zeng, Qian-Si Zhang, Shi-Dong Zhang, Qi Sun, Hui-Tao Guo, Qing-Quan Xiao, Quan Xie, Li Zhang, Gui-Fen Fan, Yun-Peng Qu, Jia Liu, Qi-Bin Liu, Yun-Lei Zhou","doi":"10.1007/s12598-024-03051-7","DOIUrl":null,"url":null,"abstract":"<div><p>Low energy-storage density and inferior thermal stability are a long-term obstacle to the advancement of pulse power devices. Herein, these concerns are addressed by improving bandgap and fabricating polar nanoregions, and the superior high efficiency of ~ 86.7%, excellent thermal stability of ~ 2% (31–160 °C) and energy density of ~ 6.8 J·cm<sup>–3</sup> are achieved in Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub>–La<sub>0.1</sub>Sr<sub>0.8</sub>TiO<sub>3-</sub><sub><i>δ</i></sub>–NaNbO<sub>3</sub> ceramics. The high breakdown strength (460 kV·cm<sup>–1</sup>) is ascribed to the broadened bandgap and refined grain. Slim ferroelectric loops originate from the construction of polar nanoregions (PNRs) in a pseudocubic matrix, and transmission electron microscope and piezoelectric force microscope measurements reveal the occurrence of PNRs. The phase-field stimulation and UV–Vis spectrophotometer measurement reveal that the increased grain boundary density and bandgap are beneficial for promoting breakdown strength. The strategy provides an efficient path to prepare Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub>La<sub>0.1</sub>Sr<sub>0.8</sub>TiO<sub>3-</sub><sub><i>δ</i></sub>-based ceramics with superior efficiency, high energy density and outstanding thermal stability.</p><h3>Graphical abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3313 - 3323"},"PeriodicalIF":9.6000,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced energy-storage performances and thermal stability in BNT–LST-based ceramics by tuning domain configuration and bandgap\",\"authors\":\"Fang-Fang Zeng, Qian-Si Zhang, Shi-Dong Zhang, Qi Sun, Hui-Tao Guo, Qing-Quan Xiao, Quan Xie, Li Zhang, Gui-Fen Fan, Yun-Peng Qu, Jia Liu, Qi-Bin Liu, Yun-Lei Zhou\",\"doi\":\"10.1007/s12598-024-03051-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Low energy-storage density and inferior thermal stability are a long-term obstacle to the advancement of pulse power devices. Herein, these concerns are addressed by improving bandgap and fabricating polar nanoregions, and the superior high efficiency of ~ 86.7%, excellent thermal stability of ~ 2% (31–160 °C) and energy density of ~ 6.8 J·cm<sup>–3</sup> are achieved in Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub>–La<sub>0.1</sub>Sr<sub>0.8</sub>TiO<sub>3-</sub><sub><i>δ</i></sub>–NaNbO<sub>3</sub> ceramics. The high breakdown strength (460 kV·cm<sup>–1</sup>) is ascribed to the broadened bandgap and refined grain. Slim ferroelectric loops originate from the construction of polar nanoregions (PNRs) in a pseudocubic matrix, and transmission electron microscope and piezoelectric force microscope measurements reveal the occurrence of PNRs. The phase-field stimulation and UV–Vis spectrophotometer measurement reveal that the increased grain boundary density and bandgap are beneficial for promoting breakdown strength. The strategy provides an efficient path to prepare Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub>La<sub>0.1</sub>Sr<sub>0.8</sub>TiO<sub>3-</sub><sub><i>δ</i></sub>-based ceramics with superior efficiency, high energy density and outstanding thermal stability.</p><h3>Graphical abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":749,\"journal\":{\"name\":\"Rare Metals\",\"volume\":\"44 5\",\"pages\":\"3313 - 3323\"},\"PeriodicalIF\":9.6000,\"publicationDate\":\"2025-02-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Rare Metals\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12598-024-03051-7\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Rare Metals","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12598-024-03051-7","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Enhanced energy-storage performances and thermal stability in BNT–LST-based ceramics by tuning domain configuration and bandgap
Low energy-storage density and inferior thermal stability are a long-term obstacle to the advancement of pulse power devices. Herein, these concerns are addressed by improving bandgap and fabricating polar nanoregions, and the superior high efficiency of ~ 86.7%, excellent thermal stability of ~ 2% (31–160 °C) and energy density of ~ 6.8 J·cm–3 are achieved in Bi0.5Na0.5TiO3–La0.1Sr0.8TiO3-δ–NaNbO3 ceramics. The high breakdown strength (460 kV·cm–1) is ascribed to the broadened bandgap and refined grain. Slim ferroelectric loops originate from the construction of polar nanoregions (PNRs) in a pseudocubic matrix, and transmission electron microscope and piezoelectric force microscope measurements reveal the occurrence of PNRs. The phase-field stimulation and UV–Vis spectrophotometer measurement reveal that the increased grain boundary density and bandgap are beneficial for promoting breakdown strength. The strategy provides an efficient path to prepare Bi0.5Na0.5TiO3La0.1Sr0.8TiO3-δ-based ceramics with superior efficiency, high energy density and outstanding thermal stability.
期刊介绍：
Rare Metals is a monthly peer-reviewed journal published by the Nonferrous Metals Society of China. It serves as a platform for engineers and scientists to communicate and disseminate original research articles in the field of rare metals. The journal focuses on a wide range of topics including metallurgy, processing, and determination of rare metals. Additionally, it showcases the application of rare metals in advanced materials such as superconductors, semiconductors, composites, and ceramics.
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