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Giant energy-storage density with ultrahigh efficiency in lead-free relaxors via high-entropy design

Author

Listed:
  • Liang Chen

    (University of Science and Technology Beijing
    University of Science and Technology Beijing)

  • Shiqing Deng

    (University of Science and Technology Beijing
    University of Science and Technology Beijing)

  • Hui Liu

    (University of Science and Technology Beijing
    University of Science and Technology Beijing)

  • Jie Wu

    (University of Science and Technology Beijing)

  • He Qi

    (University of Science and Technology Beijing
    University of Science and Technology Beijing)

  • Jun Chen

    (University of Science and Technology Beijing
    University of Science and Technology Beijing)

Abstract

Next-generation advanced high/pulsed power capacitors rely heavily on dielectric ceramics with high energy storage performance. However, thus far, the huge challenge of realizing ultrahigh recoverable energy storage density (Wrec) accompanied by ultrahigh efficiency (η) still existed and has become a key bottleneck restricting the development of dielectric materials in cutting-edge energy storage applications. Here, we propose a high-entropy strategy to design “local polymorphic distortion” including rhombohedral-orthorhombic-tetragonal-cubic multiphase nanoclusters and random oxygen octahedral tilt, resulting in ultrasmall polar nanoregions, an enhanced breakdown electric field, and delayed polarization saturation. A giant Wrec ~10.06 J cm−3 is realized in lead-free relaxor ferroelectrics, especially with an ultrahigh η ~90.8%, showing breakthrough progress in the comprehensive energy storage performance for lead-free bulk ceramics. This work opens up an effective avenue to design dielectric materials with ultrahigh comprehensive energy storage performance to meet the demanding requirements of advanced energy storage applications.

Suggested Citation

  • Liang Chen & Shiqing Deng & Hui Liu & Jie Wu & He Qi & Jun Chen, 2022. "Giant energy-storage density with ultrahigh efficiency in lead-free relaxors via high-entropy design," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-30821-7
    DOI: 10.1038/s41467-022-30821-7
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    References listed on IDEAS

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    1. Jinfeng Lin & Jin Qian & Guanglong Ge & Yuxuan Yang & Jiangfan Li & Xiao Wu & Guohui Li & Simin Wang & Yingchun Liu & Jialiang Zhang & Jiwei Zhai & Xiaoming Shi & Haijun Wu, 2024. "Multiscale reconfiguration induced highly saturated poling in lead-free piezoceramics for giant energy conversion," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    2. Antu Laha & Suguru Yoshida & Francisco Marques dos Santos Vieira & Hemian Yi & Seng Huat Lee & Sai Venkata Gayathri Ayyagari & Yingdong Guan & Lujin Min & Jose Gonzalez Jimenez & Leixin Miao & David G, 2024. "High-entropy engineering of the crystal and electronic structures in a Dirac material," Nature Communications, Nature, vol. 15(1), pages 1-11, December.

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