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Magnetic tri-stable triboelectric nanogenerator for harvesting energy from low-frequency vibration

Author

Listed:
  • Tan, Dongguo
  • Ou, Xu
  • Zhou, Jiaxi
  • Wang, Kai
  • Pan, Hongbin
  • Peng, Jian
  • Sun, Hongxin

Abstract

Traditional linear triboelectric nanogenerators (TENGs) exhibit small-amplitude responses under low-frequency vibration, making it challenging to harvest low-frequency vibration energy. To address this issue, a tri-stable triboelectric nanogenerator (MTTENG) utilizing a magnetic negative-stiffness mechanism is presented, which enables large-amplitude inter-well oscillation and high electrical outputs in the low-frequency region. The design inspiration, detailed structure, and working principles of the MTTENG are introduced firstly. Then the theoretical models of the MTTENG are constructed. The mechanical characteristics and electrical performance of the MTTENG are analyzed by solving the theoretical models. Furthermore, the influences of key parameters on the performance of the MTTENG are investigated. The equivalent circuit model established through Simulink and the experiment setup are conducted to verify the precision of the theoretical models. The results indicate that the MTTENG can generate large-amplitude inter-well oscillation under low-frequency vibration excitation, enabling it to convert vibration energy into electric energy in low-frequency region. The maximum output power of the MTTENG can reach 0.322 mW under the frequency of 5.5 Hz and the load resistance of 100 MΩ. The bandwidth of low-frequency energy harvesting can be effectively broadened by choosing suitable system parameters. This study provides an avenue for achieving high-efficiency low-frequency vibration energy harvesting.

Suggested Citation

  • Tan, Dongguo & Ou, Xu & Zhou, Jiaxi & Wang, Kai & Pan, Hongbin & Peng, Jian & Sun, Hongxin, 2025. "Magnetic tri-stable triboelectric nanogenerator for harvesting energy from low-frequency vibration," Renewable Energy, Elsevier, vol. 243(C).
    • Handle: RePEc:eee:renene:v:243:y:2025:i:c:s096014812500179x
    DOI: 10.1016/j.renene.2025.122517
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