High-performance energy harvester fabricated with aerosol deposited PMN-PT material

[摘要] This paper reports a high-performance piezoelectric energy harvester (EH) fabricated with xPb(Mg1/3Nb2/3)-(l-x)PbTiO3(PMN-PT) by aerosol deposition method. The result indicates that PMN-PT based EH owns 1.8 times output power which is higher than traditional PbZrxTi1-xO3(PZT) based EH. In order to compare the output performance of EH fabricated with PMN- PT compared with PZT, the similar thickness of PMN-PT and PZT thin film is deposited on stainless steel subtracted. The experimental results show that PZT-based EH had a maximum output power of 4.65 μW with 1.11 Vp-poutput voltage excited at 94.4 Hz under 0.5g base excitation, while the PMN-PT based device has a maximum output power of 8.42 μW with 1.49 Vp-poutput voltage at a vibration frequency of 94.8 Hz and the same base excitation level. The volumetric power density was 82.95 μW/mm3and 48.05 μW/mm3for the device based on PMN- PT and PZT materials, respectively. All the results demonstrate that PMN-PT has better output performance than PZT.

[发布机构] Department of Engineering Science and Ocean Engineering Science, National Taiwan University, Taipei, Taiwan^1

[效力级别] 能源学

[关键词] Aerosol deposition method;Energy Harvester;Maximum output power;Output performance;Output voltages;Piezoelectric energy harvesters;Vibration frequency;Volumetric power density