High‐Temperature BiScO3‐PbTiO3 Piezoelectric Vibration Energy Harvester. (16th August 2016) - Wu, Jingen
Abstract : Conventionally, effective mechanical vibration energy harvesting is based on (Pb, Zr)TiO3 (PZT) ceramics, poly(vinylidene fluoride) (PVDF) polymers or PVDF/PZT or other piezoelectric composite materials, and their working temperature is normally limited to room temperature (R‐T) or below 150 °C. Here, bismuth scandium lead titanate (BiScO3 ‐PbTiO3, abbreviated as BSPT) ceramic is reported which has a high Curie temperature point around 450 °C and its application for high‐temperature (H‐T) vibration energy harvesting. Experimental results show that it exhibits an excellent H‐T piezoelectricity, converting mechanical vibration energy into electric power effectively in a wide temperature range from R‐T till 250 °C. This research shows the BSPT piezoelectric energy harvester having the potential application for self‐power source of wireless sensor network system in high temperature circumstance. Abstract : Conventionally, effective mechanical vibration energy harvesting is based on (Pb, Zr)TiO3 (PZT) ceramics, polyvinylidene fluoride (PVDF) polymers or PVDF/PZT, and/or other piezoelectric composite materials, and their working temperature is normally limited to room temperature (R‐T) or below 150 °C. Here, a high‐temperature BiScO3 ‐PbTiO3 piezoelectric vibration energy harvester is reported, which works effectively in a wide temperature range from R‐T till 250 °C.