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Giant energy density and high efficiency achieved in bismuth ferrite-based film capacitors via domain engineering

Author

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  • Hao Pan

    (Tsinghua University)

  • Jing Ma

    (Tsinghua University)

  • Ji Ma

    (Tsinghua University)

  • Qinghua Zhang

    (Chinese Academy of Sciences)

  • Xiaozhi Liu

    (Chinese Academy of Sciences)

  • Bo Guan

    (Chinese Academy of Sciences)

  • Lin Gu

    (Chinese Academy of Sciences
    Collaborative Innovation Center of Quantum Matter
    University of Chinese Academy of Sciences)

  • Xin Zhang

    (Tsinghua University)

  • Yu-Jun Zhang

    (Tsinghua University)

  • Liangliang Li

    (Tsinghua University)

  • Yang Shen

    (Tsinghua University)

  • Yuan-Hua Lin

    (Tsinghua University)

  • Ce-Wen Nan

    (Tsinghua University)

Abstract

Developing high-performance film dielectrics for capacitive energy storage has been a great challenge for modern electrical devices. Despite good results obtained in lead titanate-based dielectrics, lead-free alternatives are strongly desirable due to environmental concerns. Here we demonstrate that giant energy densities of ~70 J cm−3, together with high efficiency as well as excellent cycling and thermal stability, can be achieved in lead-free bismuth ferrite-strontium titanate solid-solution films through domain engineering. It is revealed that the incorporation of strontium titanate transforms the ferroelectric micro-domains of bismuth ferrite into highly-dynamic polar nano-regions, resulting in a ferroelectric to relaxor-ferroelectric transition with concurrently improved energy density and efficiency. Additionally, the introduction of strontium titanate greatly improves the electrical insulation and breakdown strength of the films by suppressing the formation of oxygen vacancies. This work opens up a feasible and propagable route, i.e., domain engineering, to systematically develop new lead-free dielectrics for energy storage.

Suggested Citation

  • Hao Pan & Jing Ma & Ji Ma & Qinghua Zhang & Xiaozhi Liu & Bo Guan & Lin Gu & Xin Zhang & Yu-Jun Zhang & Liangliang Li & Yang Shen & Yuan-Hua Lin & Ce-Wen Nan, 2018. "Giant energy density and high efficiency achieved in bismuth ferrite-based film capacitors via domain engineering," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-04189-6
    DOI: 10.1038/s41467-018-04189-6
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    Cited by:

    1. Mao-Hua Zhang & Hui Ding & Sonja Egert & Changhao Zhao & Lorenzo Villa & Lovro Fulanović & Pedro B. Groszewicz & Gerd Buntkowsky & Hans-Joachim Kleebe & Karsten Albe & Andreas Klein & Jurij Koruza, 2023. "Tailoring high-energy storage NaNbO3-based materials from antiferroelectric to relaxor states," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    2. Wei Li & Zhong-Hui Shen & Run-Lin Liu & Xiao-Xiao Chen & Meng-Fan Guo & Jin-Ming Guo & Hua Hao & Yang Shen & Han-Xing Liu & Long-Qing Chen & Ce-Wen Nan, 2024. "Generative learning facilitated discovery of high-entropy ceramic dielectrics for capacitive energy storage," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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