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<p>Triboelectric Nanogenerators (TENG), transformational devices that harness mechanical energy to generate electricity, are pivotal for driving the advancement of autonomous technologies in today’s mobile-centric world. In this study, a TENG is developed, using a novel composite film of Polyvinyl Alcohol-Expanded Graphite (PVA-EGr) as the positive triboelectric layer, Polyurethane (PU) as the negative triboelectric layer, and aluminum (Al) foil tape as electrodes. Various characterizations are performed to study the properties of the composite film and compared to pristine PVA film, including crystallographic structure, surface morphology, elemental composition, chemical bonding, and analysis of functional groups present in both films. Further, the electrical performance of the fabricated devices shows that the TENG with 0.4&#xa0;g of EGr achieves the highest output voltage, current, and power of 264.68&#xa0;V, 6.87 μA, and 2.88 mW, respectively. This optimized device demonstrates its capability by charging different capacitors and powering a series of green LEDs, highlighting its suitability for practical applications in electronic devices.</p>

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Development of expanded graphite composite-based triboelectric nanogenerator for sustainable energy generation

  • 期刊论文

  • 发表日期：

    2025年5月24日

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  • Sebghatullah Amini,
  • Rumana Farheen Sagade Muktar Ahmed,
  • Sangamesha Madanahalli Ankanathappa,
  • Krishnaveni Sannathammegowda

摘要

Triboelectric Nanogenerators (TENG), transformational devices that harness mechanical energy to generate electricity, are pivotal for driving the advancement of autonomous technologies in today’s mobile-centric world. In this study, a TENG is developed, using a novel composite film of Polyvinyl Alcohol-Expanded Graphite (PVA-EGr) as the positive triboelectric layer, Polyurethane (PU) as the negative triboelectric layer, and aluminum (Al) foil tape as electrodes. Various characterizations are performed to study the properties of the composite film and compared to pristine PVA film, including crystallographic structure, surface morphology, elemental composition, chemical bonding, and analysis of functional groups present in both films. Further, the electrical performance of the fabricated devices shows that the TENG with 0.4 g of EGr achieves the highest output voltage, current, and power of 264.68 V, 6.87 μA, and 2.88 mW, respectively. This optimized device demonstrates its capability by charging different capacitors and powering a series of green LEDs, highlighting its suitability for practical applications in electronic devices.