Juntao Huang, Saifei Wang, Zhifei Zhang, Mingli Chen, Han Wang, Haihua Huang, Qian Wang, Jigong Hao, Wei Li, Juan Du, Mahesh Kumar Joshi, Peng Fu
{"title":"Multiscale Structural Regulation of Energy Storage Properties and Their Mechanism of the (1 - <i>x</i>) (Bi<sub>0.5</sub>Na<sub>0.5</sub>)<sub>0.7</sub>Sr<sub>0.3</sub>TiO<sub>3</sub>-<i>x</i>Ca(Mg<sub>1/3</sub>Ta<sub>2/3</sub>)O<sub>3</sub> Ceramics.","authors":"Juntao Huang, Saifei Wang, Zhifei Zhang, Mingli Chen, Han Wang, Haihua Huang, Qian Wang, Jigong Hao, Wei Li, Juan Du, Mahesh Kumar Joshi, Peng Fu","doi":"10.1021/acsami.4c22803","DOIUrl":null,"url":null,"abstract":"<p><p>Ceramic dielectric capacitors have gained significant attention due to their ultrahigh power density, current density, and ultrafast charge-discharge speed. However, their potential applications have been limited by their relatively low energy storage density. Researchers have employed various approaches to enhance their energy storage density. In this study, (1 - <i>x</i>)(Bi<sub>0.5</sub>Na<sub>0.5</sub>)<sub>0.7</sub>Sr<sub>0.3</sub>TiO<sub>3</sub>-<i>x</i>Ca(Mg<sub>1/3</sub>Ta<sub>2/3</sub>)O<sub>3</sub> ceramics were prepared via a solid-phase reaction, and the effect of their structure on the energy storage properties was investigated. The results indicate that the introduction of Ca(Mg<sub>1/3</sub>Ta<sub>2/3</sub>)O<sub>3</sub> significantly alters the multiscale structures of the (Bi<sub>0.5</sub>Na<sub>0.5</sub>)<sub>0.7</sub>Sr<sub>0.3</sub>TiO<sub>3</sub> ceramic, including the transformation from the <i>T</i>-phase to the <i>C</i>-phase, refinement of ceramic grains, and the formation of polar nanoregions (PNRs), accompanied by an increase in the bandgap and relaxation degree. These structural changes collectively contributed to the improved overall energy storage properties of the modified ceramics. Notably, the 0.92(Bi<sub>0.5</sub>Na<sub>0.5</sub>)<sub>0.7</sub>Sr<sub>0.3</sub>TiO<sub>3</sub>-0.08Ca(Mg<sub>1/3</sub>Ta<sub>2/3</sub>)O<sub>3</sub> ceramic demonstrated a recoverable energy storage density (<i>W</i><sub>rec</sub>) of 8.37 J/cm<sup>3</sup> with an energy storage efficiency (η) of 87.7% at an electric field of 530 kV/cm. It also exhibited good temperature stability (25-120 °C), frequency stability (1-100 Hz), and fatigue stability (1-10<sup>5</sup>). Furthermore, it displayed exceptional charge and discharge properties, with the discharge energy density (<i>W</i><sub>D</sub>), discharge time (<i>t</i><sub>0.9</sub>), current density (<i>C</i><sub>D</sub>), and power density (<i>P</i><sub>D</sub>) attaining 4.06 J/cm<sup>3</sup>, 35.2 ns, 2143.28 A/cm<sup>2</sup>, and 460.71 MW/cm<sup>3</sup>, respectively. These findings suggest that modified (1 - <i>x</i>)(Bi<sub>0.5</sub>Na<sub>0.5</sub>)<sub>0.7</sub>Sr<sub>0.3</sub>TiO<sub>3</sub>-<i>x</i>Ca(Mg<sub>1/3</sub>Ta<sub>2/3</sub>)O<sub>3</sub> ceramics are promising candidates for high-power pulsed electronic systems.</p>","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":" ","pages":"19938-19951"},"PeriodicalIF":8.3000,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Materials & Interfaces","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1021/acsami.4c22803","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/3/23 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Ceramic dielectric capacitors have gained significant attention due to their ultrahigh power density, current density, and ultrafast charge-discharge speed. However, their potential applications have been limited by their relatively low energy storage density. Researchers have employed various approaches to enhance their energy storage density. In this study, (1 - x)(Bi0.5Na0.5)0.7Sr0.3TiO3-xCa(Mg1/3Ta2/3)O3 ceramics were prepared via a solid-phase reaction, and the effect of their structure on the energy storage properties was investigated. The results indicate that the introduction of Ca(Mg1/3Ta2/3)O3 significantly alters the multiscale structures of the (Bi0.5Na0.5)0.7Sr0.3TiO3 ceramic, including the transformation from the T-phase to the C-phase, refinement of ceramic grains, and the formation of polar nanoregions (PNRs), accompanied by an increase in the bandgap and relaxation degree. These structural changes collectively contributed to the improved overall energy storage properties of the modified ceramics. Notably, the 0.92(Bi0.5Na0.5)0.7Sr0.3TiO3-0.08Ca(Mg1/3Ta2/3)O3 ceramic demonstrated a recoverable energy storage density (Wrec) of 8.37 J/cm3 with an energy storage efficiency (η) of 87.7% at an electric field of 530 kV/cm. It also exhibited good temperature stability (25-120 °C), frequency stability (1-100 Hz), and fatigue stability (1-105). Furthermore, it displayed exceptional charge and discharge properties, with the discharge energy density (WD), discharge time (t0.9), current density (CD), and power density (PD) attaining 4.06 J/cm3, 35.2 ns, 2143.28 A/cm2, and 460.71 MW/cm3, respectively. These findings suggest that modified (1 - x)(Bi0.5Na0.5)0.7Sr0.3TiO3-xCa(Mg1/3Ta2/3)O3 ceramics are promising candidates for high-power pulsed electronic systems.
期刊介绍：
ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.
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