Ultrahigh Capacitive Energy Storage in Lead-Free Relaxors via Localizing Distortion

IF 15.8 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

ACS Nano Pub Date : 2025-05-04 DOI:10.1021/acsnano.5c02357

Liang Chen, Yuming Zhang, He Qi, Ruiyu Wang, Yunxuan Ji, Takumi Nishikubo, Masaki Azuma, Chang Zhou, Jun Chen

{"title":"Ultrahigh Capacitive Energy Storage in Lead-Free Relaxors via Localizing Distortion","authors":"Liang Chen, Yuming Zhang, He Qi, Ruiyu Wang, Yunxuan Ji, Takumi Nishikubo, Masaki Azuma, Chang Zhou, Jun Chen","doi":"10.1021/acsnano.5c02357","DOIUrl":null,"url":null,"abstract":"The significant polarization hysteresis under external fields can be stimulated by long-range ordered distortions, including cation displacements and oxygen octahedral tilts, deteriorating the energy storage performance and reliable operation of dielectric capacitors. Here, we propose a strategy of localized distortion to craft a disordered nanostructure landscape, manifested as strongly polar orthorhombic rocks dissociated in the transition region of polymorphic nanoclusters and strong oxygen-tilted blocks embedded in the weak oxygen distortion region, resulting in a smooth polarization response trajectory with large polarization fluctuations, small hysteresis, and delayed polarization saturation. Through localizing distortion, an ultrahigh recoverable energy density of 12.5 J cm<sup>–3</sup> can be realized with an inspiring efficiency of 87%, alongside ultrawide capacitance temperature stability (from −100 to 432 °C) far exceeding X9R criteria, showing breakthrough progress in the overall performance for NaNbO<sub>3</sub>-based lead-free bulk ceramics. This work unveils an effective avenue of localized distortion to develop dielectrics with excellent energy storage performance and the potential to be extended to other functionalities.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"113 1","pages":""},"PeriodicalIF":15.8000,"publicationDate":"2025-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Nano","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1021/acsnano.5c02357","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

The significant polarization hysteresis under external fields can be stimulated by long-range ordered distortions, including cation displacements and oxygen octahedral tilts, deteriorating the energy storage performance and reliable operation of dielectric capacitors. Here, we propose a strategy of localized distortion to craft a disordered nanostructure landscape, manifested as strongly polar orthorhombic rocks dissociated in the transition region of polymorphic nanoclusters and strong oxygen-tilted blocks embedded in the weak oxygen distortion region, resulting in a smooth polarization response trajectory with large polarization fluctuations, small hysteresis, and delayed polarization saturation. Through localizing distortion, an ultrahigh recoverable energy density of 12.5 J cm^–3 can be realized with an inspiring efficiency of 87%, alongside ultrawide capacitance temperature stability (from −100 to 432 °C) far exceeding X9R criteria, showing breakthrough progress in the overall performance for NaNbO₃-based lead-free bulk ceramics. This work unveils an effective avenue of localized distortion to develop dielectrics with excellent energy storage performance and the potential to be extended to other functionalities.

Abstract Image

查看原文本刊更多论文

基于局域畸变的无铅弛豫器超高电容储能

在外场作用下，阳离子位移和氧八面体倾斜等长程有序畸变会引起明显的极化滞后，影响介质电容器的储能性能和可靠运行。在此，我们提出了一种局部扭曲策略来制造一个无序的纳米结构景观，表现为在多晶纳米团簇的过渡区域解离的强极性正交岩石和嵌入在弱氧扭曲区域的强氧倾斜块体，从而导致极化响应轨迹平滑，极化波动大，滞后小，极化饱和延迟。通过局域化畸变，可以实现12.5 J cm-3的超高可回收能量密度，效率高达87%，同时超宽电容温度稳定性（从- 100到432°C）远远超过X9R标准，显示了nanbo3基无铅体陶瓷整体性能的突破性进展。这项工作揭示了一种有效的局部变形途径，以开发具有优异储能性能和扩展到其他功能潜力的介电材料。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

ACS Nano 工程技术-材料科学：综合

CiteScore

26.00

自引率

4.10%

发文量

1627

审稿时长

1.7 months

期刊介绍： ACS Nano, published monthly, serves as an international forum for comprehensive articles on nanoscience and nanotechnology research at the intersections of chemistry, biology, materials science, physics, and engineering. The journal fosters communication among scientists in these communities, facilitating collaboration, new research opportunities, and advancements through discoveries. ACS Nano covers synthesis, assembly, characterization, theory, and simulation of nanostructures, nanobiotechnology, nanofabrication, methods and tools for nanoscience and nanotechnology, and self- and directed-assembly. Alongside original research articles, it offers thorough reviews, perspectives on cutting-edge research, and discussions envisioning the future of nanoscience and nanotechnology.