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A lead-free flexible piezoelectric-triboelectric hybrid nanogenerator composed of uniquely designed PVDF/KNN-ZS nanofibrous web

Author

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  • Banerjee, Swagata
  • Bairagi, Satyaranjan
  • Ali, S. Wazed

Abstract

With the increasing search for eco-friendly small-scale energy harvesting technologies, piezoelectric energy harvesting is gaining ground. Such technologies can be used to power small scale portable electronics, eliminating the need of batteries. In this study, a metal (Zn and Sn) doped potassium sodium niobate (KNN-ZS) piezoelectric filler has been synthesized through hydrothermal process. The doped KNN-ZS has a nanorod like structure with a high piezoelectric coefficient of ∼95 pC/N. The incorporation of this KNN-ZS filler in PVDF matrix through the electrospinning process, has produced nanocomposite fibrous web. A loading of 3% of the KNN-ZS filler has produced better structural and morphological properties as compared to 1% and 5% loading. The PVDF/3% KNN-ZS fibrous web has been used to fabricate a nanogenerator which can produce a piezoelectric output voltage of ∼1.68 V and an output current of ∼0.216 μA. Interestingly, the nanogenerator has also been tested for the combined triboelectric and piezoelectric effect. The combined output voltage has been observed as ∼25 V and that of current has been ∼2.11 μA. The synergistic performance of piezoelectric and triboelectric effect is well evident in the functioning of the nanogenerator. The harvested electrical charge (out of the fabricated nanogenerator) can be accumulated in a suitable capacitor and the same can be utilized in powering small scale electronics which would otherwise have to be powered by batteries.

Suggested Citation

  • Banerjee, Swagata & Bairagi, Satyaranjan & Ali, S. Wazed, 2022. "A lead-free flexible piezoelectric-triboelectric hybrid nanogenerator composed of uniquely designed PVDF/KNN-ZS nanofibrous web," Energy, Elsevier, vol. 244(PB).
    • Handle: RePEc:eee:energy:v:244:y:2022:i:pb:s0360544222000056
    DOI: 10.1016/j.energy.2022.123102
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    References listed on IDEAS

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    1. Bairagi, Satyaranjan & Ali, S. Wazed, 2020. "Flexible lead-free PVDF/SM-KNN electrospun nanocomposite based piezoelectric materials: Significant enhancement of energy harvesting efficiency of the nanogenerator," Energy, Elsevier, vol. 198(C).
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    Cited by:

    1. Jeder, Khawla & Bouhamed, Ayda & Nouri, Hanen & Abdelmoula, Najmeddine & Jöhrmann, Nathanael & Wunderle, Bernhard & Khemakhem, Hamadi & Kanoun, Olfa, 2022. "Enhancement of the performance of flexible lead-free nanogenerators by doping in BaTiO3 nanoparticles," Energy, Elsevier, vol. 261(PB).

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