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Polymorphic relaxor phase and defect dipole polarization co-reinforced capacitor energy storage in temperature-monitorable high-entropy ferroelectrics

Author

Listed:
  • Xiangfu Zeng

    (Fuzhou University)

  • Jinfeng Lin

    (Fujian Normal University and Strait Laboratory of Flexible Electronics (SLoFE)
    Tongji University)

  • Gaolei Dong

    (Fuzhou University)

  • Jie Shen

    (Fuzhou University)

  • Luomeng Tang

    (Tongji University)

  • Qifa Lin

    (Fuzhou University)

  • Simin Wang

    (Tongji University)

  • Min Gao

    (Fuzhou University)

  • Chunlin Zhao

    (Fuzhou University)

  • Tengfei Lin

    (Fuzhou University)

  • Laihui Luo

    (Ningbo University)

  • Chao Chen

    (Jingdezhen Ceramic University)

  • Baisheng Sa

    (Fuzhou University)

  • Cong Lin

    (Fuzhou University)

  • Xiao Wu

    (Fuzhou University)

  • Jiwei Zhai

    (Tongji University)

Abstract

Energy storage high-entropy ceramics are famous for their ultrahigh power density and ultrafast discharge rate. However, achieving a synchronous combination of high energy density and efficiency along with intelligent temperature-monitorable function remains a significant challenge. Here, based on high-entropy strategy and phase field simulation, the polarization response of domains in Bi0.5Na0.5TiO3-based ceramics is optimized by constructing a concomitant nanostructure of defect dipole polarization and a polymorphic relaxor phase. The optimal ceramic possesses a high recyclable energy storage density (11.23 J cm−3) and a high energy storage efficiency (90.87%) at 670 kV cm−1. Furthermore, real-time temperature sensing is explored based on abnormal fluorescent negative thermal expansion, highlighting the application of intelligent cardiac defibrillation pulse capacitors. This study develops an effective strategy for enhancing the overall energy storage performance of ferroelectric ceramics to overcome the problems of insufficient energy supply and thermal runaway in traditional counterparts.

Suggested Citation

  • Xiangfu Zeng & Jinfeng Lin & Gaolei Dong & Jie Shen & Luomeng Tang & Qifa Lin & Simin Wang & Min Gao & Chunlin Zhao & Tengfei Lin & Laihui Luo & Chao Chen & Baisheng Sa & Cong Lin & Xiao Wu & Jiwei Zh, 2025. "Polymorphic relaxor phase and defect dipole polarization co-reinforced capacitor energy storage in temperature-monitorable high-entropy ferroelectrics," Nature Communications, Nature, vol. 16(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-57139-4
    DOI: 10.1038/s41467-025-57139-4
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