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Automatic Mode Transition Enabled Robust Triboelectric Nanogenerators.

Jun Chen1, Jin Yang1, Hengyu Guo1

  • 1School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States.

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|November 4, 2015
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Summary
This summary is machine-generated.

This study introduces a robust magnet-assisted automatic transition triboelectric nanogenerator (AT-TENG) that harvests ambient mechanical energy. The AT-TENG offers high output and durability for renewable energy generation and self-powered sensing applications.

Keywords:
automatic transitionself-poweredspeedometertriboelectric nanogenerator

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Area of Science:

  • Materials Science
  • Energy Harvesting
  • Nanotechnology

Background:

  • Triboelectric nanogenerators (TENGs) offer renewable energy harvesting but face robustness challenges, particularly in in-plane sliding modes.
  • Improving TENG durability is crucial for practical applications in diverse environments.

Purpose of the Study:

  • To develop a robust TENG with high energy output by addressing the limitations of in-plane sliding TENGs.
  • To create a TENG that can automatically transition between contact and non-contact working states for enhanced durability.

Main Methods:

  • Designed a magnet-assisted automatic transition triboelectric nanogenerator (AT-TENG).
  • Converted in-plane sliding electrification into a contact-separation working mode.
  • Engineered an automatic transition between contact and non-contact states.

Main Results:

  • The AT-TENG effectively harnesses ambient rotational motions, demonstrating significantly improved device robustness.
  • At 6.5 m/s wind speed or 5.5 L/min water flow, it powered 24 spotlights and charged a capacitor to >120 V in 60s.
  • The device also harvested energy from cycling and car motion, functioning as a self-powered speedometer.

Conclusions:

  • The AT-TENG provides a practical approach for ambient mechanical energy harvesting with high output and superior robustness.
  • Its structural simplicity, low cost, and wide applicability make it suitable for harsh environments.
  • The AT-TENG is effective for both energy harvesting and self-powered active sensing.