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<p>This study presents the synthesis, fabrication, and characterization of a biodegradable, biocompatible, and non-toxic triboelectric nanogenerator based on an electrospun fibrous membrane of Chitosan (CS) and Polyvinyl alcohol (PVA) blend. The nanofibrous film was prepared using Chitosan (2 wt%) and PVA (10 wt%) in a volume ratio (CS/PVA) of 50/50. The morphological analysis has been done by Field Emission Scanning Electron Microscopy (FESEM) which reveals the formation of uniform and homogeneous fibers while the successful blending of CS and PVA through characteristic functional group interactions was confirmed by Fourier Transform Infrared Spectroscopy (FTIR). A TENG based on CS/PVA nanofibrous membrane as positive and fluorinated propylene copolymer (FEP) as negative triboelectric material was assembled. It exhibits an open-circuit voltage of ̴ 150&#xa0;V, short-circuit current of ̴ 20 μA, and power density of 2.2 W/m<sup>2</sup> at 50 MΩ load resistance. The real-life applications for energy harvesting and as a self-powered speed sensor have also been demonstrated. Thus, the CS/PVA blend nanofibers can be the best alternative for several functional and biomedical applications. Due to these advantages, our work can pave a pathway toward ecological and flexible production of TENGs for various applications such as human motion monitoring and wearable electronics.</p>

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Engineering of Chitosan/poly (vinyl alcohol) nanofibrous membrane as triboelectric nanogenerator for energy harvesting and self-powered speed sensor

  • 期刊论文

  • 发表日期：

    2025年7月31日

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  • Raj Ankit,
  • Jayant Kolte

摘要

This study presents the synthesis, fabrication, and characterization of a biodegradable, biocompatible, and non-toxic triboelectric nanogenerator based on an electrospun fibrous membrane of Chitosan (CS) and Polyvinyl alcohol (PVA) blend. The nanofibrous film was prepared using Chitosan (2 wt%) and PVA (10 wt%) in a volume ratio (CS/PVA) of 50/50. The morphological analysis has been done by Field Emission Scanning Electron Microscopy (FESEM) which reveals the formation of uniform and homogeneous fibers while the successful blending of CS and PVA through characteristic functional group interactions was confirmed by Fourier Transform Infrared Spectroscopy (FTIR). A TENG based on CS/PVA nanofibrous membrane as positive and fluorinated propylene copolymer (FEP) as negative triboelectric material was assembled. It exhibits an open-circuit voltage of ̴ 150 V, short-circuit current of ̴ 20 μA, and power density of 2.2 W/m2 at 50 MΩ load resistance. The real-life applications for energy harvesting and as a self-powered speed sensor have also been demonstrated. Thus, the CS/PVA blend nanofibers can be the best alternative for several functional and biomedical applications. Due to these advantages, our work can pave a pathway toward ecological and flexible production of TENGs for various applications such as human motion monitoring and wearable electronics.