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operates based on the coupling effects of electrostatic induction and contact electrification mechanism. [10][11][12][13] TENGs are used in various everyday applications such as healthcare monitoring, self-powered sensors, portable electronic devices, etc., due to their high energy conversion efficiency. Also, the TENGs have various advantages such as easy fabrication, lightweight, costeffectiveness, and durability. [14,15] Therefore, many researchers have been focusing on further improving the output electrical performance of TENGs with flexibility and mechanical sustainability.So far, various approaches have been developed to improve the electrical output performance of TENGs, i.e., by improving the properties of the triboelectric material using chemical functionalization, modifying surface topography, inducing charge carriers, etc. [16][17][18][19][20] Also, hybridizing TENGs with piezoelectric materials is one of the promising methods to enhance electrical output performance. [21,22] However, selecting the piezoelectric materials with high piezoelectric coefficients (d 33 ) and high relative permittivity (k) is the main requirement to increase the electrical performance of nanogenerators. Several piezoelectric materials have been used in mechanical energy harvesting technology, such as lead zirconate titanate (PbZrTiO 3 ; PZT), ZnO, BaTiO 3 , ZnSnO 3 , polyvinylidene fluoride, and KNN ((K, Na)NbO 3 ). [23][24][25][26] Lead-free perovskite ZnSnO 3 has a high piezoelectric coefficient and is nontoxic (≈59 µC cm −2 ), which is helpful for energy harvesting applications. [27][28][29] Recently, Wang et al. prepared a composite matrix using ZnSnO 3 and PDMS, studied the triboelectric and piezoelectric effects (synergistic effect), and reported the enhanced electrical output. [30] Moreover, adding conductive filler materials (i.e., graphite particles, carbon nanotubes, dopamine, and silver nanowires) in the polydimethylsiloxane (PDMS) composite matrix could also efficiently increase the electrical output of nanogenerators. [31][32][33] Incorporating filler materials into the composite matrix enhances the surface charge density, electrical conductivity, and relative permittivity of the composite polymer matrix (CPM), resulting in improved electrical performance. [34,35] In this work, we synthesized lead-free piezoelectric ZnSnO 3 nanocubes (NCs) by a hydrothermal method. The synthesized ZnSnO 3 NCs were embedded into a PDMS polymer to prepare a Piezoelectric/ferroelectric zinc tin oxide (ZnSnO 3 ) nanocubes (NCs) are synthesized via a hydrothermal synthesis process. Piezoelectric materials exhibit a superior dielectric property, strong electric dipole moment, and higher piezoelectric coefficient, which results in an improved electrical output of the nanogenerator. The synthesized ZnSnO 3 NCs are embedded in triboelectric polydimethylsiloxane (PDMS) polymer to employ the synergistic effect of ZnSnO 3 /PDMS composite polymer matrix (CPM), which creates a hybrid nanogenerator (HNG). The proposed HNG reveals a high elect...

Triboelectric nanogenerators (TENGs) are one of the most trending energy harvesting devices because of their efficient and simple mechanism in harvesting mechanical energy from the environment into electricity. Herein, ferroelectric and dielectric bismuth tungstate (Bi2WO6 (BWO)) with a marigold flower‐like structure is prepared via a hydrothermal method, which is embedded in poly(vinylidene fluoride‐co‐hexafluoropropylene) (PVDF‐HFP), forming a PVDF‐HFP/BWO composite polymer film (CPF) to fabricate TENGs. Generally, the ferroelectric materials exhibit a large piezoelectric coefficient, high electrostatic dipole moment, and high dielectric constant. The prepared PVDF‐HFP/BWO CPF reveals a high polar crystalline β‐phase which leads to enhanced piezoelectric and ferroelectric properties of the CPF, thus resulting in the increased electrical performance of the fabricated TENG. The electrical output performance of the proposed TENG is systematically investigated by varying the amount of BWO material embedded in the PVDF‐HFP polymer. The fabricated PVDF‐HFP/2.5 wt% BWO CPF‐based TENG device exhibits the highest electrical output performance. Additionally, the robust test of the TENG device is conducted to investigate the electrical performance for long‐term durability and mechanical stability. Finally, the proposed TENG is operated as a self‐powered sensor, harvesting mechanical energy from daily life human activities, and powering various low‐power portable electronics.