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Engineered cellulosic triboelectric materials for multi-modal sensing via β-phase programming.

Ling-Zhi Huang1, Yan Ding2, Dan-Dan Li2

  • 1Liaoning Key Lab of Lignocellulose Chemistry and Biomaterialsbo, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, Liaoning 116034, China; Research Center of Biomass Clean Utilization, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Key Laboratory of Lignocellulosic Chemistry, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, PR China.

International Journal of Biological Macromolecules
|February 19, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed advanced cellulosic triboelectric materials for energy harvesting. These materials enhance triboelectric nanogenerators (TENGs) for sensitive, self-powered sensors, enabling wearable electronics and smart device applications.

Keywords:
ElectrospinningNon-contact triboelectric nanogeneratorTriboelectric materials

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Energy Harvesting

Background:

  • Cellulosic materials are attractive for triboelectric nanogenerators (TENGs) due to their sustainability.
  • Existing cellulose-based TENGs suffer from low surface charge density, limiting performance.
  • There is a need for improved cellulosic materials to enhance TENG sensitivity and power output.

Purpose of the Study:

  • To functionalize cellulosic triboelectric materials for enhanced performance in self-powered sensors.
  • To investigate the effect of electrospun polyvinylidene fluoride (PVDF) nanofibers within porous air-laid paper (AP) on material properties.
  • To develop high-sensitivity, self-powered sensors for various applications.

Main Methods:

  • Utilized electrostatic spinning to create functionalized cellulosic triboelectric layers.
  • Incorporated electrospun PVDF nanofibers into porous air-laid paper (AP) to form composite materials.
  • Fabricated and tested triboelectric nanogenerators (TENGs) and self-powered sensors based on the developed materials.

Main Results:

  • The PVDF/12 wt%@AP composite exhibited a significant charge output (60.7 μC m⁻²) and power output (233.28 mW m⁻²).
  • The developed contact self-sensor demonstrated high sensitivity (6.20 V kPa⁻¹) within a specific pressure range (1.23–5.0 kPa).
  • Non-contact sensors successfully recognized objects and detected human movements, with potential for wireless sensor terminals.

Conclusions:

  • Functionalized β-phase cellulosic materials offer a promising pathway for high-performance, self-powered sensors.
  • The developed materials advance the development of durable, wearable self-powered sensor systems.
  • These materials can effectively capture mechanical energy from the environment for practical applications.