Piezoelectric energy harvesting using shear mode 0.71Pb(Mg1/3Nb2/3)O3–0.29PbTiO3 single crystal cantilever

Abstract

In this letter we presented a cantilever beam used for vibration energy harvesting based on shear mode 0.71Pb(Mg1/3Nb2/3)O3–0.29PbTiO3 single crystal. The working principle of the device was inferred and the factors influencing the output were obtained using an analytical method. The electrical properties under different conditions were studied systematically. Under a cyclic force of 0.05 N (peak value), a peak voltage of 91.23 V, maximum power of 4.16 mW were measured at 60 Hz with a proof mass of 0.5 g. The results demonstrate the potential of the device in energy harvesting applied to low-power portable electronics and wireless sensors.

A shear mode piezoelectric energy harvester based on a pressurized water flow

“…Compared to the power density of the 31 mode piezoelectric cantilever of Fang et al [6], 10,843 W cm −3 , and the 15 mode piezoelectric cantilever of Ren et al [17], 24,762 W cm −3 , the power density of the presented device, 0.087 W cm −3 , is too low. The power density of the device should be increased for at least two orders to prove its feasibility.…”

“…In order to obtain a higher output power of the shear mode piezoelectric energy harvester, the dimensions and structure of the device can be optimized, and a piezoelectric material with higher piezoelectric constants can be adopted. It is possible to increase the power density by one order of magnitude by replacing the piezoelectric material, PZT-5H, which has a d 15 value of 741 pm V −1 , with the single crystal of PMN-0.29PT (0.71Pb(Mg 1/3 Nb 2/3 )O 3 -0.29PbTiO 3 ) as the piezoelectric material due to its ultrahigh d 15 value of 5980 pm V −1 [17]. Given that the values of the capacitance and stiffness of PZT-5H and PMN-0.29PT are of the same order and the d 15 value of PMN-0.29PT is nearly ten times larger than that of PZT-5H, the power density of the presented device with PMN-0.29PT as the material of the piezoelectric film can be increased by one order.…”

“…Edery-Azulay and Abramovich [16] found that for cases of low lateral displacements, the 15 mode has a greater output than the 31 mode, and by decreasing the thickness of the 15 mode piezoelectric beam while keeping its volume the same, the efficiency of the 15 mode can become much bigger than that of the 31 mode. Ren et al [17] presented a 15 mode piezoelectric cantilever beam for energy harvesting. The single crystal of 0.71Pb(Mg 1/3 Nb 2/3 )O 3 -0.29PbTiO 3 was selected as the piezoelectric material of their device due to its ultrahigh d 15 can reach the high value of 5980 pm V −1 .…”

Assessment of an energy harvester based on shear mode piezoceramics

“…In [4], a shear harvester was developed by using a PMN-PT single crystal mounted on a cantilever beam with its poling direction running along the length of the beam. With this geometry, the harvester was able to utilize shearing stresses under bending of the beam to produce an electric potential.…”

Electric properties of Mn doped 0.95Na0.5Bi0.5TiO3–0.05BaTiO3 crystal after different annealing processes

“…Piezoelectric materials, which can convert electric energy directly into mechanical energy and vice versa, constitute key components in many devices, such as transducers, ultrasonic motors, energy harvesting, actuators and sensors [1][2][3][4][5]. At present, lead-based piezoelectric materials with high piezoelectric properties have dominated the piezoelectric field.…”