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<p>We demonstrate the fabrication and operation of a piezoelectric nanogenerator (PENG), based on LiNbO<sub>3</sub> ceramic material, that can produce an average voltage of 5.5&#xa0;V to 6&#xa0;V, which can be employed for physiological and self-powered biomedical device applications. LiNbO<sub>3</sub> synthesized by the solid-state reaction method exhibits a non-centrosymmetric rhombohedral phase with the surface morphology of spherical-shaped particles in the range of 3.47&#xa0;μm. The fabricated LiNbO<sub>3</sub> PENG device is subjected to mechanical stress and produces an output voltage of 5.5&#xa0;V and 6&#xa0;V with a power density value of around 14.38&#xa0;μW/cm<sup>2</sup> at a load resistance of 220&#xa0;kΩ under the tapping and pressing conditions. The fabricated device shows excellent output voltage during the hand and jaw movement when it is placed around the wrist and jaw. The obtained results indicate that this device can be applied for self-powered sensors, wearable electronics, and other portable devices.</p>

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Energy harvesting from LiNbO3 ceramic-based piezoelectric nanogenerator for self-powered devices and physiological applications

  • 期刊论文

  • 发表日期：

    2025年11月4日

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  • M. Sarathbavan,
  • S. Jebin,
  • S. Udhayakumar,
  • K. Kamala Bharathi,
  • Sabyasachi Mukhopadhyay

摘要

We demonstrate the fabrication and operation of a piezoelectric nanogenerator (PENG), based on LiNbO3 ceramic material, that can produce an average voltage of 5.5 V to 6 V, which can be employed for physiological and self-powered biomedical device applications. LiNbO3 synthesized by the solid-state reaction method exhibits a non-centrosymmetric rhombohedral phase with the surface morphology of spherical-shaped particles in the range of 3.47 μm. The fabricated LiNbO3 PENG device is subjected to mechanical stress and produces an output voltage of 5.5 V and 6 V with a power density value of around 14.38 μW/cm2 at a load resistance of 220 kΩ under the tapping and pressing conditions. The fabricated device shows excellent output voltage during the hand and jaw movement when it is placed around the wrist and jaw. The obtained results indicate that this device can be applied for self-powered sensors, wearable electronics, and other portable devices.