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Design of polymorphic heterogeneous shell in relaxor antiferroelectrics for ultrahigh capacitive energy storage

Author

Listed:
  • Huifen Yu

    (University of Science and Technology Beijing)

  • Tengfei Hu

    (Chinese Academy of Sciences)

  • Haoyu Wang

    (University of Science and Technology Beijing)

  • He Qi

    (University of Science and Technology Beijing
    Hainan University)

  • Jie Wu

    (Hainan University)

  • Ruonan Zhang

    (University of Science and Technology Beijing)

  • Weisan Fang

    (University of Science and Technology Beijing)

  • Xiaoming Shi

    (University of Science and Technology Beijing)

  • Zhengqian Fu

    (Chinese Academy of Sciences)

  • Liang Chen

    (University of Science and Technology Beijing)

  • Jun Chen

    (University of Science and Technology Beijing
    Hainan University)

Abstract

Relaxor antiferroelectrics are considered promising candidate materials for achieving excellent energy storage capabilities. However, the trade-off between high recoverable energy density and high efficiency remains a major challenge in relaxor antiferroelectrics for practical applications. Herein, guided by phase-field simulation, we propose a strategy of designing polymorphic heterogeneous shell in core-shell dual-phase dielectrics to synergistically control micro and local heterostructures, resulting in comprehensive improvements in breakdown electric field, polarization fluctuation and saturation behaviors. Leveraging the core-shell effect and polarization heterogeneity, an ultrahigh recoverable energy density of 12.7 J cm-3 and an impressive efficiency of 87.2% are achieved in lead-free relaxor antiferroelectrics, making a performance breakthrough in core-shell dielectrics. This work opens up a new avenue to efficiently develop high-performance energy storage dielectrics and is expected to be popularized in other fields.

Suggested Citation

  • Huifen Yu & Tengfei Hu & Haoyu Wang & He Qi & Jie Wu & Ruonan Zhang & Weisan Fang & Xiaoming Shi & Zhengqian Fu & Liang Chen & Jun Chen, 2025. "Design of polymorphic heterogeneous shell in relaxor antiferroelectrics for ultrahigh capacitive energy storage," Nature Communications, Nature, vol. 16(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-56316-9
    DOI: 10.1038/s41467-025-56316-9
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