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Triboelectric Generator Based on Oriented Self-Assembled Peptide Microbelts.

Vladislav Slabov1, João Vidal2, Pavel Zelenovskii3

  • 1Department of Physics & CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.

Nanomaterials (Basel, Switzerland)
|November 26, 2022
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Summary
This summary is machine-generated.

Triboelectric nanogenerators (TENGs) using diphenylalanine (FF) microbelts offer efficient energy harvesting. These biocompatible TENGs show improved performance with temperature treatment and molecular cyclization.

Keywords:
TENGdiphenylalanineself-assembly

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Area of Science:

  • Materials Science
  • Biomedical Engineering
  • Energy Harvesting

Background:

  • Triboelectric nanogenerators (TENGs) are efficient, low-cost energy harvesters from mechanical vibrations.
  • Biocompatible materials are crucial for TENGs in biomedical applications.
  • Diphenylalanine (FF) microstructures offer unique properties and diverse morphologies for TENG development.

Purpose of the Study:

  • To develop and evaluate a contact-separate mode TENG using oriented diphenylalanine (FF) microbelts.
  • To investigate the effect of temperature treatments on TENG performance.
  • To compare the performance of FF-based TENGs with FF-based piezoelectric nanogenerators.

Main Methods:

  • Fabrication of TENGs using arrays of oriented FF microbelts via dip-coating.
  • Performance testing of TENGs under various temperature treatments.
  • Analysis of the influence of bound and mobile water on TENG output.

Main Results:

  • The developed FF microbelt TENGs demonstrated superior performance (short-circuit current, open-circuit voltage, output power) compared to FF piezoelectric nanogenerators.
  • Bound water in FF nanochannels primarily impacts open-circuit voltage (VOC).
  • Mobile water significantly increases short-circuit current (ISC).
  • Molecular cyclization of FF enhanced TENG performance, likely due to increased surface energy and flattening.

Conclusions:

  • Diphenylalanine microbelts are effective materials for fabricating high-performance, biocompatible TENGs.
  • Temperature and water content critically influence TENG performance.
  • FF-based TENGs show significant potential for biomedical energy harvesting applications.