Frequency band broadening and charge density enhancement of a vibrational triboelectric nanogenerator with two stoppers

Youchao Qi, Guoxu Liu, Yang Kuang, Lu Wang, Jianhua Zeng, Yuan Lin, Han Zhou, Meiling Zhu (Lead / Corresponding author), Chi Zhang (Lead / Corresponding author)

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)
48 Downloads (Pure)

Abstract

Vibrational triboelectric nanogenerators (V-TENG) can be used to harvest broadband vibration energy due to the nonlinear impact force induced by a stopper. However, V-TENGs with a single stopper have limited bandwidth and surface charge density, which has limited their application in wideband vibration energy harvesting. Herein, a V-TENG with two stoppers and a charge pumping effect is proposed for frequency band broadening and charge density enhancement. The theoretical analysis and experimental validation have indicated the V-TENG with two stoppers could improve the bandwidth by 75% compared with one stopper at a gap distance of 0.5 mm. Moreover, a charge pump can be constructed with two output channels, which has improved surface charge density by about 14 times. With the frequency varying from 18 to 38 Hz, the V-TENG can continually power 400 LEDs and charge a commercial capacitor quickly. This work has shown an encouraging method for enhancing the performance of V-TENGs, which also has great prospects in harvesting wideband vibration energy from machines, cars, ships, and human motions for self-powered electronics.

Original languageEnglish
Article number107427
Number of pages9
JournalNano Energy
Volume99
Early online date25 May 2022
DOIs
Publication statusPublished - Aug 2022

Keywords

  • Charge pump
  • Nonlinear impact force
  • Surface charge density
  • Triboelectric nanogenerator
  • Wideband vibration

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • General Materials Science
  • Electrical and Electronic Engineering

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