Harnessing Multisite High-Entropy Architecture for Ultrahigh Energy Storage Multilayer Capacitors

High energy density lead-free dielectric capacitors play a pivotal role in state-of-the-art electrical and electronic systems. Nevertheless, the low energy storage capacities have persistently posed a significant impediment to the ongoing trend toward the miniaturization and integration of electronic devices. Here, we report an equimolar high-entropy relaxor ferroelectric multilayer capacitor that demonstrates exceptional energy storage performance by harnessing flexible multisite tetragonal tungsten bronze (TTB) high-entropy architecture. Our findings reveal that the equimolar high-entropy design results in NbO<sub>6</sub> octahedra distortion, disrupting long-range ferroelectric order while preserving strong off-center displacements along the polar axis at a local scale. This unique structure characteristic of high-entropy TTB not only enhances its relaxor feature, reducing hysteresis, but also maintains high polarizability under applied electric fields. Consequently, our high-entropy TTB multilayer ceramic capacitors achieved an unprecedented recoverable energy density of 20.2 J·cm<sup>-3</sup>, accompanied by a notably enhanced efficiency of 93.8%. This approach opens the door for the development of innovative functional ceramics and devices with prominent energy storage capability by designing flexible multisite high-entropy architecture.

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Publication Details

Journal
Journal of the American Chemical Society
Published
2025-10-29
DOI
https://doi.org/10.1021/jacs.5c12566
Citations
1
Primary Topic
Ferroelectric and Piezoelectric Materials
Type
article
Field-Weighted Citation Impact
0.52
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article

Harnessing Multisite High-Entropy Architecture for Ultrahigh Energy Storage Multilayer Capacitors

Tiantian Wu, Fangfang Xu, Cheng Yang, Junhao Chu et al.
1 citations
Journal of the American Chemical Society
Ferroelectric and Piezoelectric Materials
0.52
article

Harnessing Multisite High-Entropy Architecture for Ultrahigh Energy Storage Multilayer Capacitors

Tiantian Wu, Fangfang Xu, Cheng Yang, Junhao Chu, Haonan Peng, Wanbiao Hu, T. Honda, Yonghong Chen, Teng Lü, Zhengqian Fu, Zhen Liu, Yun Liu, Shujun J. Zhang, Jiyang Xie, Zhisheng Lin, Zhichao Hong, Genshui Wang
article en
1 citations

Abstract

High energy density lead-free dielectric capacitors play a pivotal role in state-of-the-art electrical and electronic systems. Nevertheless, the low energy storage capacities have persistently posed a significant impediment to the ongoing trend toward the miniaturization and integration of electronic devices. Here, we report an equimolar high-entropy relaxor ferroelectric multilayer capacitor that demonstrates exceptional energy storage performance by harnessing flexible multisite tetragonal tungsten bronze (TTB) high-entropy architecture. Our findings reveal that the equimolar high-entropy design results in NbO<sub>6</sub> octahedra distortion, disrupting long-range ferroelectric order while preserving strong off-center displacements along the polar axis at a local scale. This unique structure characteristic of high-entropy TTB not only enhances its relaxor feature, reducing hysteresis, but also maintains high polarizability under applied electric fields. Consequently, our high-entropy TTB multilayer ceramic capacitors achieved an unprecedented recoverable energy density of 20.2 J·cm<sup>-3</sup>, accompanied by a notably enhanced efficiency of 93.8%. This approach opens the door for the development of innovative functional ceramics and devices with prominent energy storage capability by designing flexible multisite high-entropy architecture.

Journal of the American Chemical SocietyVol. 147(45)
Tokyo Electron (Japan) (JP), Australian National University (AU), High Energy Accelerator Research Organization (JP), Yunnan University (CN), Chinese Academy of Sciences (CN), University of Wollongong (AU), The 180th Hospital of PLA (CN), Shanghai Institute of Technical Physics (CN), Advanced Materials and Devices (United States) (US), Superconducting Systems (United States) (US), Shanghai Institute of Ceramics (CN), University of Chinese Academy of Sciences (CN), Institute of Materials Structure Science (JP)
Openalex Percentile: Top 31%
Ferroelectric and Piezoelectric Materials
0.52
DOISourceOpenAlex
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