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<p>Increasing demand for smart electronic devices, whose number is expected to surpass 25 billion by 2030, indicates an expected rise in energy consumption demand proportionally. This demand can be met with the real-time energy generation devices, in addition to the battery-stored energies. The piezoelectric nanogenerator (PENG) device is one such example of real-time energy generation device. In general, PENG devices are based on inorganic materials, but in the present context of environment-friendly lifestyle, the PENG devices are also needed to be shifted toward organic materials, which offer additional benefits such as low cost, ease of manufacturing, compatibility, high resistance to toxicity, and high curie temperature properties. In this work, we synthesized organic diisopropylammonium bromide (DIPAB) powder in slow evaporation method and the all-organic poly(vinylidene fluoride)(PVDF)/DIPAB composite fibers by electrospun, at various concentrations (viz. 0, 0.5, 1, 2, 5, and 10 wt%) of DIPAB. At 5&#xa0;wt%&#xa0;(5DIPAB) concentration, characteristic properties achieved optimality with electroactive phase (96%), dielectric constant (35), and crystallinity (62%). Similarly, ferroelectric properties also got improved at this concentration, along with improvement in <i>d</i><sub><i>33</i></sub> value (∼ 38.5 pC/N). Considering all this, 5DIPAB composite fiber sample was used to fabricate PENG device. The PENG showed <i>V</i><sub><i>oc</i></sub> ∼ 15&#xa0;V and <i>I</i><sub>sc</sub> ∼ 5μA, far higher than its PVDF counterpart. Finally, the developed PENG device exhibited energy harvesting from different human motions (viz. finger, arm, and leg), illustrating their potential use in flexible touch panels and wearable biomedical electronics.</p>

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Electrospun fiber-based organic PVDF/DIPAB composite for high-performance piezoelectric nanogenerator: human motion energy harvesting

  • 期刊论文

  • 发表日期：

    2026年6月28日

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  • Vishal Sharma,
  • Jasveer Singh,
  • Utsa Sarkar,
  • Jasbir Singh Hundal,
  • Lakbir Singh,
  • Dipankar Mandal,
  • Jaspal Singh

摘要

Increasing demand for smart electronic devices, whose number is expected to surpass 25 billion by 2030, indicates an expected rise in energy consumption demand proportionally. This demand can be met with the real-time energy generation devices, in addition to the battery-stored energies. The piezoelectric nanogenerator (PENG) device is one such example of real-time energy generation device. In general, PENG devices are based on inorganic materials, but in the present context of environment-friendly lifestyle, the PENG devices are also needed to be shifted toward organic materials, which offer additional benefits such as low cost, ease of manufacturing, compatibility, high resistance to toxicity, and high curie temperature properties. In this work, we synthesized organic diisopropylammonium bromide (DIPAB) powder in slow evaporation method and the all-organic poly(vinylidene fluoride)(PVDF)/DIPAB composite fibers by electrospun, at various concentrations (viz. 0, 0.5, 1, 2, 5, and 10 wt%) of DIPAB. At 5 wt% (5DIPAB) concentration, characteristic properties achieved optimality with electroactive phase (96%), dielectric constant (35), and crystallinity (62%). Similarly, ferroelectric properties also got improved at this concentration, along with improvement in d33 value (∼ 38.5 pC/N). Considering all this, 5DIPAB composite fiber sample was used to fabricate PENG device. The PENG showed Voc ∼ 15 V and Isc ∼ 5μA, far higher than its PVDF counterpart. Finally, the developed PENG device exhibited energy harvesting from different human motions (viz. finger, arm, and leg), illustrating their potential use in flexible touch panels and wearable biomedical electronics.