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Updated: Oct 25, 2025

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High performance temperature difference triboelectric nanogenerator.

Bolang Cheng1, Qi Xu1, Yaqin Ding1

  • 1Institute of Nanoscience and Nanotechnology, School of Materials and Energy, Lanzhou University, Lanzhou, China.

Nature Communications
|August 7, 2021
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Summary
This summary is machine-generated.

A novel temperature difference triboelectric nanogenerator overcomes high-temperature performance loss. This device significantly boosts electrical output by leveraging temperature gradients, achieving record current densities.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Energy Harvesting

Background:

  • High temperatures typically degrade triboelectric nanogenerator (TENG) performance due to charge dissipation via thermionic emission.
  • Existing TENGs struggle to maintain efficiency in elevated temperature environments, limiting their practical applications.

Purpose of the Study:

  • To design and fabricate a TENG capable of enhanced electrical output in high-temperature conditions.
  • To investigate the effect of temperature differences on TENG performance metrics.

Main Methods:

  • Development of a temperature difference triboelectric nanogenerator (TD-TENG).
  • Systematic variation of the temperature difference between the friction layers.
  • Measurement of output voltage, current, surface charge density, and output power.

Main Results:

  • A temperature difference of 145 K increased output voltage, current, surface charge density, and power by 2.7, 2.2, 3.0, and 2.9 times, respectively.
  • Optimal performance was observed at a 145 K temperature difference, yielding a maximum output current density of 443 μA cm⁻², surpassing the previous record.
  • Performance decreased beyond a 145 K temperature difference due to gradual reductions in surface charge density.

Conclusions:

  • TD-TENGs offer a viable strategy to enhance TENG performance in high-temperature environments.
  • The study demonstrates a new approach to overcome temperature-related limitations in energy harvesting devices.
  • The optimized TD-TENG achieved a record-breaking current density, showcasing significant potential for practical applications.