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Breaking dielectric dilemma via polymer functionalized perovskite piezocomposite with large current density output

Author

Listed:
  • Asif Abdullah Khan

    (University of Waterloo
    University of Waterloo)

  • Avi Mathur

    (University of Waterloo
    University of Waterloo)

  • Lu Yin

    (University of Waterloo
    University of Waterloo)

  • Mahmoud Almadhoun

    (University of Waterloo)

  • Jian Yin

    (University of Waterloo
    University of Waterloo)

  • Majid Haji Bagheri

    (University of Waterloo
    University of Waterloo)

  • Md Fahim Al Fattah

    (University of Waterloo
    University of Waterloo)

  • Araz Rajabi-Abhari

    (University of Toronto)

  • Ning Yan

    (University of Toronto)

  • Boxin Zhao

    (University of Waterloo
    University of Waterloo)

  • Vivek Maheshwari

    (University of Waterloo
    University of Waterloo)

  • Dayan Ban

    (University of Waterloo
    University of Waterloo
    Henan University)

Abstract

Organometal halide perovskite (OHP) composites are flexible and easy to synthesize, making them ideal for ambient mechanical energy harvesting. Yet, the output current density from the piezoelectric nanogenerators (PENGs) remains orders of magnitude lower than their ceramic counterparts. In prior composites, high permittivity nanoparticles enhance the dielectric constant (ϵr) but reduce the dielectric strength (Eb). This guides our design: increase the dielectric constant by the high ϵr nanoparticle while enhancing the Eb by optimizing the perovskite structure. Therefore, we chemically functionalize the nanoparticles to suppress their electrically triggered ion migration for an improved piezoelectric response. The polystyrene functionalizes with FAPbBr2I enlarges the grains, homogenizes the halide ions, and maintains their structural integrity inside a polymer. Consequently, the PENG produces a current density of 2.6 µAcm−2N−1. The intercalated electrodes boost the current density to 25 µAcm−2N−1, an order of magnitude enhancement for OHP composites, and higher than ceramic composites.

Suggested Citation

  • Asif Abdullah Khan & Avi Mathur & Lu Yin & Mahmoud Almadhoun & Jian Yin & Majid Haji Bagheri & Md Fahim Al Fattah & Araz Rajabi-Abhari & Ning Yan & Boxin Zhao & Vivek Maheshwari & Dayan Ban, 2024. "Breaking dielectric dilemma via polymer functionalized perovskite piezocomposite with large current density output," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-53846-6
    DOI: 10.1038/s41467-024-53846-6
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    References listed on IDEAS

    as
    1. Long Gu & Jinmei Liu & Nuanyang Cui & Qi Xu & Tao Du & Lu Zhang & Zheng Wang & Changbai Long & Yong Qin, 2020. "Enhancing the current density of a piezoelectric nanogenerator using a three-dimensional intercalation electrode," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    2. Yang Liu & Haibibu Aziguli & Bing Zhang & Wenhan Xu & Wenchang Lu & J. Bernholc & Qing Wang, 2018. "Ferroelectric polymers exhibiting behaviour reminiscent of a morphotropic phase boundary," Nature, Nature, vol. 562(7725), pages 96-100, October.
    3. Yanfei Huang & Guanchun Rui & Qiong Li & Elshad Allahyarov & Ruipeng Li & Masafumi Fukuto & Gan-Ji Zhong & Jia-Zhuang Xu & Zhong-Ming Li & Philip L. Taylor & Lei Zhu, 2021. "Enhanced piezoelectricity from highly polarizable oriented amorphous fractions in biaxially oriented poly(vinylidene fluoride) with pure β crystals," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
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