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<p>The development of piezoelectric nanogenerators (PENGs) using Zn doped barium titanate (Zn-BaTiO<b>₃</b>) within polyvinylidene fluoride (PVDF) matrices has shown significant potential for energy harvesting applications. This study was focused on the synthesis of Zn-BaTiO<b>₃</b> through sol–gel route and fabrication of Zn-BaTiO<b>₃</b>/PVDF nanocomposites via., solvent casting techniques. The effects of various doping levels were investigated through XRD, FT-IR, FESEM techniques based on their shape and morphology of Zn-BaTiO<b>₃</b> and Zn-BaTiO<b>₃</b>/PVDF nanocomposites. Raman spectroscopy and Photoluminescence spectra were used to confirm the doping of Zn and defect states present in the Zn-BaTiO<sub>3</sub>. The fabricated nanocomposites were also successfully characterized using TGA and DSC to confirm the thermal stability and phase transformation. The presence of defect states was confirmed by decreased emission intensities at 420 to 480&#xa0;nm, which corresponds to the defect-mediated transitions. The influence of Zn-BaTiO<b>₃</b> in PVDF matrix was proved by the improvement of dielectric permittivity and piezoelectric response of the fabricated nanocomposites. The PVDF with 2wt% of Zn-BaTiO<sub>3</sub> is shows an enhanced output voltage of 1472&#xa0;mV which is 1.56 times higher than pure PVDF and it would be a promising candidate for advanced piezoelectric nanogenerators, capable of efficiently converting mechanical energy into electrical energy for powering low power electronic devices.</p>

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Synthesis of Zn-BaTiO3 and fabrication of flexible Zn-BaTiO3/PVDF nanocomposites for piezoelectric applications

  • 期刊论文

  • 发表日期：

    2025年5月16日

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  • S. Kaviyarasu,
  • M. Satthiyaraju,
  • K. M. Govindaraju

摘要

The development of piezoelectric nanogenerators (PENGs) using Zn doped barium titanate (Zn-BaTiO₃) within polyvinylidene fluoride (PVDF) matrices has shown significant potential for energy harvesting applications. This study was focused on the synthesis of Zn-BaTiO₃ through sol–gel route and fabrication of Zn-BaTiO₃/PVDF nanocomposites via., solvent casting techniques. The effects of various doping levels were investigated through XRD, FT-IR, FESEM techniques based on their shape and morphology of Zn-BaTiO₃ and Zn-BaTiO₃/PVDF nanocomposites. Raman spectroscopy and Photoluminescence spectra were used to confirm the doping of Zn and defect states present in the Zn-BaTiO3. The fabricated nanocomposites were also successfully characterized using TGA and DSC to confirm the thermal stability and phase transformation. The presence of defect states was confirmed by decreased emission intensities at 420 to 480 nm, which corresponds to the defect-mediated transitions. The influence of Zn-BaTiO₃ in PVDF matrix was proved by the improvement of dielectric permittivity and piezoelectric response of the fabricated nanocomposites. The PVDF with 2wt% of Zn-BaTiO3 is shows an enhanced output voltage of 1472 mV which is 1.56 times higher than pure PVDF and it would be a promising candidate for advanced piezoelectric nanogenerators, capable of efficiently converting mechanical energy into electrical energy for powering low power electronic devices.