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High entropy modulated quantum paraelectric perovskite for capacitive energy storage

Author

Listed:
  • Yongbo Fan

    (The Hong Kong Polytechnic University)

  • Wanbo Qu

    (Xi’an Jiaotong University)

  • Haifa Qiu

    (The Hong Kong Polytechnic University)

  • Shuaibing Gao

    (Xidian University)

  • Lu Li

    (The Hong Kong Polytechnic University)

  • Zezhou Lin

    (The Hong Kong Polytechnic University)

  • Yuxuan Yang

    (Xi’an Jiaotong University)

  • Junyi Yu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Lin Wang

    (Chinese Academy of Sciences)

  • Saiwei Luan

    (Chinese Academy of Sciences)

  • Hao Li

    (The Hong Kong Polytechnic University)

  • Lin Lei

    (Northwestern Polytechnical University)

  • Yang Zhang

    (Xi’an Jiaotong University)

  • Huiqing Fan

    (Northwestern Polytechnical University)

  • Haijun Wu

    (Xi’an Jiaotong University)

  • Shuhui Yu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Haitao Huang

    (The Hong Kong Polytechnic University)

Abstract

Electrostatic capacitors are critical components in the power system of electric vehicles (EVs). The current commercially available solutions are largely based on ferroelectric oxides of which the permittivity decrease with increasing electric field. Here, we propose a high entropy modulation design in a quantum paraelectric-ferroelectric/antiferroelectric matrix, which enables a stable and field-independent energy charge/discharge response across a wide voltage range. By effectively synergizing the high efficiency (η) of quantum paraelectrics and the high polarization of the ferroelectric/anti-ferroelectric matrix with the entropy regulator, a high recoverable energy density (Wrec) of 13.3 J cm−3 with an η of 92.4% is achieved in the bulk state of the perovskite material, promising for device scale-up. Versatile polar regions as well as a defect-less microstructure is achieved by the optimized compositional design and material processing. On a mesoscopic level, the electrical microstructure of the material is engineered to provide a large breakdown strength (Eb) of 750 kV/cm, which is confirmed by the resolved electrochemical information and finite-element simulation. The proposed strategy provides a new path for designing high performance next generation energy storage/power converting dielectrics. This demonstration of quantum paraelectrics for energy storage application is expected to stimulate extensive efforts in the area.

Suggested Citation

  • Yongbo Fan & Wanbo Qu & Haifa Qiu & Shuaibing Gao & Lu Li & Zezhou Lin & Yuxuan Yang & Junyi Yu & Lin Wang & Saiwei Luan & Hao Li & Lin Lei & Yang Zhang & Huiqing Fan & Haijun Wu & Shuhui Yu & Haitao , 2025. "High entropy modulated quantum paraelectric perovskite for capacitive energy storage," Nature Communications, Nature, vol. 16(1), pages 1-11, December.
  • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-59081-x
    DOI: 10.1038/s41467-025-59081-x
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