Flexible piezoelectric energy harvester/sensor with high voltage output over wide temperature range

Authors

Yanhua Sun, University of WollongongFollow
Jianguo Chen, Shanghai University, University of Wollongong
Xiaoning Li, University of WollongongFollow
Yun Lu, University of WollongongFollow
Shujun Zhang, University of WollongongFollow
Zhenxiang Cheng, University of WollongongFollow

RIS ID

135386

Publication Details

Sun, Y., Chen, J., Li, X., Lu, Y., Zhang, S. & Cheng, Z. (2019). Flexible piezoelectric energy harvester/sensor with high voltage output over wide temperature range. Nano Energy, 61 337-345.

Abstract

A flexible piezoelectric energy harvester based on polyimide (PI)/(Bi,La)FeO 3 -PbTiO 3 (BLF-PT) 0-3 composite was fabricated by a cost-effective two-step process. The energy harvesting outputs are sensitive to the BLF-PT weight fraction and testing frequency. The flexible BLF-PT/PI composite with 30 wt% BLF-PT exhibits an open circuit voltage of 110 V and a short circuit current of 310 nA under pressure of 0.18 MPa at frequency of 1 Hz. Of particular significance is that the flexible energy harvester exhibits high temperature stability up to 150 °C and a voltage output of 30 V at temperatures as high as 300 °C, showing great potential for capturing mechanical energy or sensor over a wide temperature range at ultra-low frequency.