Breaking polarization-breakdown strength paradox for ultrahigh energy storage density in NBT-based ceramics

Wenjun Cao, Yanwei Wu, Xiaoyu Yang, Daqin Guan, Xuecen Huang, Feng Li, Youmin Guo, Chunchang Wang (), Binghui Ge (), Xu Hou () and Zhenxiang Cheng ()
Additional contact information
Wenjun Cao: Anhui University
Yanwei Wu: Anhui University
Xiaoyu Yang: Anhui University
Daqin Guan: Curtin University
Xuecen Huang: Anhui University
Feng Li: Anhui University
Youmin Guo: Anhui University
Chunchang Wang: Anhui University
Binghui Ge: Anhui University
Xu Hou: Hong Kong Polytechnic University
Zhenxiang Cheng: University of Wollongong

Nature Communications, 2025, vol. 16, issue 1, 1-11

Abstract: Abstract Dielectric capacitors are crucial in contemporary electronic devices for storing and recycling electric energy. However, their energy-storage density is significantly hindered by the paradox between polarization (P) and breakdown strength (Eb). Herein, we propose a strategy to overcome the paradox through a unique high-entropy design aimed at regulating phase structure and minimizing interfacial polarization. This approach ensures an ample polar phase while providing a sufficiently high field to induce a transition from antiferroelectric to ferroelectric, significantly enhancing polarization. This strategy has been successfully applied to the Na0.5Bi0.5TiO3 (NBT) system, modified by high-entropy material (Na1/6Bi1/6Ca1/6Sr1/6Nd1/6Li1/6)TiO3 (NBCSNLT). For the (1-x)NBT-xNBCSNLT bulk ceramics, our findings indicate that Eb consistently increases with the NBCSNLT content, effectively resolving the paradox for electric field above 550 kV/cm. This leads to simultaneously high Eb and large P. Consequently, an ultrahigh recoverable energy-storage density (Wrec) of 18.2 J/cm3, a high efficiency (η) of 85.6%, and a record-breaking energy-storage potential (Wrec/Eb) value of 0.026 mC/cm2, were achieved in the bulk 0.55NBCSNLT. Additionally, this sample exhibited excellent temperature/frequency stability. This strategy provides an effective pathway for surmounting the P-Eb paradox, paving the way for ultrahigh energy-storage density.

Date: 2025
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-025-61030-7 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-61030-7

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-025-61030-7

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().