Highly adaptive and broadband triboelectric energy harvester with stretching silicone rubber strip for variable harmonic frequency vibration
- Resource Type
- Original Paper
- Authors
- Du, Taili; Shen, Dianlong; Xi, Ziyue; Yu, Hongyong; Dong, Fangyang; Zhao, Cong; Zhu, Meixian; Zou, Yongjiu; Sun, Peiting; Xu, Minyi
- Source
- Nano Research. 17(5):4089-4099
- Subject
- vibration energy harvesting
triboelectric nanogenerator
flexible silicone rubber strip
harmonic vibration
broadband
- Language
- English
- ISSN
- 1998-0124
1998-0000
An enormous number of wireless sensing nodes (WSNs) are of great significance for the Internet of Things (IoT). It is tremendously prospective to realize the in-situ power supply of WSNs by harvesting unutilized mechanical vibration energy. A harmonic silicone rubber triboelectric nanogenerator (HSR-TENG) is developed focusing on ubiquitous constant working frequency machinery. The unique design of the strip serving as a flexible resonator realizes both soft contact and high and broadband output. The significant factors influencing the 1st-order vibration mode of the strip are developed for realizing the harmonic frequency adaptation to external vibration. The surface treatment of the strip improves the output performance of HSR-TENG by 49.1% as well as eliminates the adhesion effect. The HSR-TENG is able to achieve a voltage output bandwidth of 19 Hz under a vibration strength of 3.0, showing its broadband capability. The peak power density of 153.9 W/m3 is achieved and 12 × 0.5 W light-emitting diodes (LEDs) are successfully illuminated by the HSR-TENG. It can continuously power a temperature sensor by harvesting the actual compressor vibration energy. In brief, the HSR-TENG provides a promising way for constant frequency vibration energy harvesting, so as to achieve in-situ power supply for the WSNs in the vicinity.