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<p>In the present study, we fabricated a flexible Piezoelectric Nanogenerator using h-BN (Hexagonal Boron Nitride) as a ceramic in a PVDF (Polyvinylidene Fluoride) matrix. The current research is focused on synthesizing BN nanoparticles and using them in a piezoelectric nanogenerator. BN nanoparticles are synthesized using the hydrothermal chemical exfoliation technique. The bulk powder is reduced to nanosized particles using the reducing agent Hydrazine Hydrate (N<sub>2</sub>H<sub>4</sub> · H<sub>2</sub>O), which aids the exfoliation process. The X-ray diffraction plot verified the creation of the h-BN phase. The scanning electron microscopy (SEM) technique analyzes the surface morphology. Using the h-BN powder, thin films of different concentrations (0, 1, 2, 3, and 5%) are made using the Drop cast technique by interspersing BN ceramic as an additive to the PVDF polymer. These films become the basic building block of prepared flexible piezoelectric nanogenerators (PENGs). Open-circuit output voltages are measured using these nanogenerators. By applying force to its surface, the assembled piezoelectric nanogenerator (PENG) device’s piezoelectric functionality was monitored. Finger tapping produced an open-circuit output voltage of 20.7&#xa0;V. Additionally, the non-toxic hybrid devices demonstrated remarkable sensitivity for tracking movements of the person’s body, like punching and finger bending. Finally, the study concludes by using the optimal voltage for piezoelectric nanogenerators in various applications.</p>

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Fine-tuning β-phase for high-performance h-BN/PVDF nanogenerators

  • 期刊论文

  • 发表日期：

    2026年1月6日

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  • Abhishek Kumar,
  • Savita Sharma,
  • M. Jayasimhadri,
  • Nitin K. Puri

摘要

In the present study, we fabricated a flexible Piezoelectric Nanogenerator using h-BN (Hexagonal Boron Nitride) as a ceramic in a PVDF (Polyvinylidene Fluoride) matrix. The current research is focused on synthesizing BN nanoparticles and using them in a piezoelectric nanogenerator. BN nanoparticles are synthesized using the hydrothermal chemical exfoliation technique. The bulk powder is reduced to nanosized particles using the reducing agent Hydrazine Hydrate (N2H4 · H2O), which aids the exfoliation process. The X-ray diffraction plot verified the creation of the h-BN phase. The scanning electron microscopy (SEM) technique analyzes the surface morphology. Using the h-BN powder, thin films of different concentrations (0, 1, 2, 3, and 5%) are made using the Drop cast technique by interspersing BN ceramic as an additive to the PVDF polymer. These films become the basic building block of prepared flexible piezoelectric nanogenerators (PENGs). Open-circuit output voltages are measured using these nanogenerators. By applying force to its surface, the assembled piezoelectric nanogenerator (PENG) device’s piezoelectric functionality was monitored. Finger tapping produced an open-circuit output voltage of 20.7 V. Additionally, the non-toxic hybrid devices demonstrated remarkable sensitivity for tracking movements of the person’s body, like punching and finger bending. Finally, the study concludes by using the optimal voltage for piezoelectric nanogenerators in various applications.