Research & Development in Material Science

On the Energy Harvesting Potential of Lead- Free Piezoelectric Composites from Air-Flow and Temperature Change

  • Open or Close Zhenjin Wang, Shoki Abe and Fumio Narita*

    Department of Materials Processing, Tohoku University, Japan

    *Corresponding author: Fumio Narita, Department of Materials Processing, Graduate School of Engineering, Tohoku University, Aoba-yama, 6-6-02, Sendai 980-8579, Japan

Submission: March 23, 2018;Published: April 03, 2018

DOI: 10.31031/RDMS.2018.05.000607

ISSN: 2576-8840
Volume5 Issue2


This communication gives a short overview of our recent findings of output voltage in lead-free piezoelectric particle/polymer composites due to air-flow and temperature change. Barium titanate (BTO)/epoxy composite and potassium sodium niobate (KNN)/epoxy composite sheets were fabricated. The composite samples were polarized using either a parallel plate contact or contactless (corona) poling technique. The distribution of the phases in the matrix was studied by a scanning electron microscopy (SEM). The output voltage was then measured for the composite sheets due to airflow. The output voltage was also examined for the composites due to temperature change, and the effect of the poling conditions on the performance was examined. This short communication opens the door for development of flexible multi-energy harvesting devices.

Keywords: Piezoelectric composites; Vibration energy harvesting; Temperature energy harvesting; Sensors

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