Abstract
The 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3(0.7PMN-0.3PT) nanorods were obtained via hydrothermal method with high yield (over 78%). Then, new piezoelectric nanocomposites based on (1−x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-PT) nanorods were fabricated by dispersing the 0.7PMN-0.3PT nanorods into piezoelectric poly(vinylidene fluoride) (PVDF) polymer. The mechanical behaviors of the nanocomposites were investigated. The voltage and current generation of PMN-PT/PVDF nanocomposites were also measured. The results showed that the tensile strength, yield strength, and Young’s modulus of nanocomposites were enhanced as compared to that of the pure PVDF. The largest Young’s modulus of 1.71 GPa was found in the samples with 20 wt % nanorod content. The maximum output voltage of 10.3 V and output current of 46 nA were obtained in the samples with 20 wt % nanorod content, which was able to provide a 13-fold larger output voltage and a 4.5-fold larger output current than that of pure PVDF piezoelectric polymer. The current density of PMN-PT/PVDF nanocomposites is 20 nA/cm2. The PMN-PT/PVDF nanocomposites exhibited great potential for flexible self-powered sensing applications.
Highlights
Ferroelectric materials have brilliant dielectric, ferroelectric, piezoelectric, pyroelectric, and nonlinear optic properties could be used in microwave devices, non-random access memories, energy conversion devices, and sensors [1,2]
It is close to the lattice constants value of the perovskite phase could be observed; no pyrochlore phase is detected by X-ray powder diffraction (XRD) analysis
The tensile strength, yield strength, and Young’s modulus (E) of mechanism of Pb(Mg1/3 Nb2/3 )O3 -xPbTiO3 (PMN-PT)/poly(vinylidene fluoride) (PVDF) composite can be explained as a fiber-reinforced mechanism
Summary
Ferroelectric materials have brilliant dielectric, ferroelectric, piezoelectric, pyroelectric, and nonlinear optic properties could be used in microwave devices, non-random access memories, energy conversion devices, and sensors [1,2]. Piezoelectric nanostructures provide a practical way to harvest energy from the environment to power nanodevices and nanosystems [3,4,5]. They can be used as novel self-powered sensing devices. Voltage and current generation the PMN-PT nanocomposites wereand measured a piezoelectric poly(vinylidene fluoride)of(PVDF), which prevents the breaking crackingduring of mechanical tapping. PMN-PT nanocomposite produced a high output voltage embedded piezoelectric nanorods under mechanical stress, to produce a piezoelectric nanocomposite. The current, and thuswas a high piezoelectric coefficientpolyimide of both the nanorods and PVDF nanocomposite tape-casted onto a metal-coated substrate and subsequently cured. Only2.the perovskite phase could be observed; no pyrochlore phase is detected by XRD analysis
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