Tuning the Electromechanical Response of P(VDF-TrFE)/ZnSnO₃-Based Binary Piezoelectric Composites for Biomechanical Energy-Harvesting and Self-Powered Mechanosensing

Morphotropic phase boundary-based BaTi0.89Sn0.11O3 filler induced polarization tuned P(VDF-TrFE) composites as efficient piezo-tribo hybrid nanogenerators

“…None of the composites (even BTS15W) has shown a purely lossy P – E loop which confirms that the effect of space charge polarization and the conducting pathway is very minimal for the BTS/P(VDF-TrFE) system, and the polarization is mainly occurring from the contribution of the actual displacement current. 8 As the filler-loaded composite films could not reach proper saturation at ∼662 kV cm −1 of applied field, comparing the values of their polarization with that of the polarization of a saturated P – E loop of P(VDF-TrFE) (obtained at ∼798 kV cm −1 ) is not logical. Therefore, the P – E loops of all the films under a similar applied field (∼600 kV cm −1 ) have been compared in Fig.…”

“…Hence, the present work suggests that (as observed from Table 1) simple loading of highly piezoelectric MPB fillers such as BTS can greatly improve the hybrid energy harvesting performance of P(VDF-TrFE)-based composites via polarization tuning. However, if the incorporated filler does not exhibit high dielectric permittivity and piezoelectric coefficient, the polarization of P(VDF-TrFE) may not be tuned significantly, 8 which may give rise to low output performance.…”

“…There are some reports where P(VDF-TrFE)-based composites have been used for piezoelectric energy harvesting only. 8,[55][56][57][58] In most of these cases, apart from simple ller loading, other different additional techniques have also been explored. Hence, the present work suggests that (as observed from Table 1) simple loading of highly piezoelectric MPB llers such as BTS can greatly improve the hybrid energy harvesting performance of P(VDF-TrFE)-based composites via polarization tuning.…”

“…While some of these polymers exhibit piezoelectricity, some do not. 8 Piezoelectricity can be included in all of these polymers via suitable filler loading. On the other hand, these materials most often exhibit good triboelectric charge density too, 9 which is very advantageous for their usage in triboelectric nanogenerators.…”

Ionic liquid modified PVDF/BCZT nanocomposites for space charge induced mechanical energy harvesting performance

“…Poly(vinylidene fluoride) (PVDF) based composites have drawn very significant and wide research interest all over the world in recent times due to their excellent applicabilities in flexible mechanical energy harvesting and self-powered vibration and motion sensing [1][2][3]. Owing to these excellent performances, they are very often coupled with various other devices too (gas sensing, solar cell, pH sensing, wireless monitoring, magnetoelectric devices, etc) for different reallife applications [4][5][6][7][8].…”