Self-poled piezoelectric polymer composites via melt-state energy implantation

Zhao-Xia Huang (), Lan-Wei Li, Yun-Zhi Huang, Wen-Xu Rao, Hao-Wei Jiang, Jin Wang, Huan-Huan Zhang, He-Zhi He and Jin-Ping Qu ()
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Zhao-Xia Huang: South China University of Technology
Lan-Wei Li: South China University of Technology
Yun-Zhi Huang: South China University of Technology
Wen-Xu Rao: South China University of Technology
Hao-Wei Jiang: South China University of Technology
Jin Wang: South China University of Technology
Huan-Huan Zhang: South China University of Technology
He-Zhi He: South China University of Technology
Jin-Ping Qu: South China University of Technology

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract Lightweight flexible piezoelectric polymers are demanded for various applications. However, the low instinctively piezoelectric coefficient (i.e. d33) and complex poling process greatly resist their applications. Herein, we show that introducing dynamic pressure during fabrication is capable for poling polyvinylidene difluoride/barium titanate (PVDF/BTO) composites with d33 of ~51.20 pC/N at low density of ~0.64 g/cm3. The melt-state dynamic pressure driven energy implantation induces structure evolutions of both PVDF and BTO are demonstrated as reasons for self-poling. Then, the porous material is employed as pressure sensor with a high output of ~20.0 V and sensitivity of ~132.87 mV/kPa. Besides, the energy harvesting experiment suggests power density of ~58.7 mW/m2 can be achieved for 10 N pressure with a long-term durability. In summary, we not only provide a high performance lightweight, flexible piezoelectric polymer composite towards sustainable self-powered sensing and energy harvesting, but also pave an avenue for electrical-free fabrication of piezoelectric polymers.

Date: 2024
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DOI: 10.1038/s41467-024-45184-4

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