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| Title | Dual-Functional Triboelectric-Electromagnetic Hybrid Nanogenerator For Simultaneous Vibration Energy Harvesting And Vibration Suppression |
|---|---|
| ID_Doc | 21168 |
| Authors | Wang Z.; Hou L.; He J.; Yao M.; Yang T. |
| Year | 2025 |
| Published | Nano Energy, 142 |
| DOI | http://dx.doi.org/10.1016/j.nanoen.2025.111277 |
| Abstract | With the advancement of smart cities, ubiquitous distributed sensor networks are facing obvious energy supply challenges, and scavenging ambient vibration energy for powering distributed sensors has become a feasible solution. Conventional vibration energy harvesters are based on vibration amplification, but vibration is a double-edged sword that can pose challenges to structural safety. This work presents a novel dual-functional triboelectric-electromagnetic hybrid nanogenerator (DFTE-HNG), which simultaneously realizes vibration energy harvesting and vibration suppression through a single device. The DFTE-HNG features a two-degree-of-freedom architecture integrating a mechanical rectifier mechanism and a hybrid nanogenerator for energy harvesting. The integrated hybrid nanogenerator combines a sliding triboelectric nanogenerator (S-TENG), three contact-separation triboelectric nanogenerators (C-TENG), and an electromagnetic generator (EMG). The local resonance energy of the two-degree-of-freedom system is fully captured by the mechanical rectifier mechanism and converted to electrical power by the hybrid nanogenerator, while the vibration energy is absorbed and dissipated to avoid vibration energy transferring to the protected components to achieve global vibration suppression. The peak power of DFTE-HNG at 15 Hz can reach 1.23 mW for S-TENG, 18.71 μW for C-TENG, and 74.79 mW for EMG, while the vibration acceleration is attenuated by 51 %. The self-powered wireless bridge acceleration monitoring system was successfully implemented, with the DFTE-HNG installed in the bridge foundation frame to capture bridge vibration energy while avoiding vibration damage to the bridge structure, demonstrating the potential application of the dual-functional DFTE-HNG. © 2025 Elsevier Ltd |
| Author Keywords | Self-powered sensor; Triboelectric-electromagnetic hybrid nanogenerator; Vibration energy harvesting; Vibration suppression |
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