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The mechanical impact‐based energy harvesting characteristics of 0–3ϕBa0.85Ca0.15Zr0.10Ti0.90O3/(1−ϕ)polyvinylidene fluoride–polytetrafluoroethylene (BCZT/PVDF–PTFE); volume fraction (0 ≤ ϕ ≤ 0.25) nanocomposites, fabricated using a melt‐mixing method, are presented. A scanning electron microscope is utilized to investigate the distribution of BCZT nanoceramic powder as filler in the blended polymer (PVDF–PTFE; 80:20). The X‐ray diffraction method is applied to ascertain the formations of BCZT and BCZT/PVDF–PTFE. The values of apparent porosity, water absorption, shore D hardness, dielectric constant (εr), tangent loss (tan δ), piezoelectric charge coefficient (d33) and voltage constant (g33), and figure of merit (FM) are found to increase upon increasing ϕ. A significant increment in the impact‐generated electric voltage (25.38–77.73 V) and energy (9.42–243.9 nJ) is noticed with the increasing ϕ. In addition, the small values of water absorption (<0.091%) and tan δ (≈10−2) with relatively higher values of εr, d33, g33, FM, and shore D hardness, power out (Pdc = 0.47 mW using 470 Ω resistive load ϕ = 0.25 sample) as well as improved voltage generation and energy harvesting characteristics, prefigure the promise of the present composite system a superior lead‐free alternative for the applications in energy harvesting, detection/sensing, and structural health monitoring. [ABSTRACT FROM AUTHOR]

This paper demonstrates the energy harvesting characteristics of 0–3 x (Na 1/2 Bi 1/2)TiO 3 /(1- x)PVDF; 0 ≤ x (volume fraction) ≤ 0.30 composites employing the drop weight impact method. The X-ray diffraction method was adopted for ascertaining the formations of (Na 1/2 Bi 1/2)TiO 3 ceramic and (Na 1/2 Bi 1/2)TiO 3 /PVDF composites. The values of bulk density, apparent porosity, free dielectric constant, piezoelectric coefficient (d 33), figure of merit (FoM), and Shore D hardness were found to increase, whereas the value of tanδ first decreases up to x = 0.025 and then increases upon increasing x. Also, the value of the piezoelectric voltage constant (g 33) increases up till x = 0.25 and it drops a little for x = 0.30. A remarkable increment in the contact voltage (from 7.71 V to 15.23 V for x = 0.30) with increasing impact height (h = 6–21 cm) and (from 5.37 V to 15.23 V for h = 21 cm) with increasing x was observed. The small values of water absorption (<0.099 wt%), apparent porosity (<2%), tanδ (∼10−2 at 1 kHz), and higher values of d 33 , g 33 , FoM , Shore D hardness, power output (P dc = 2.32 μW using 47 kΩ and C = 100 pF for x = 0.30) as well as improved voltage responses, prefigure the possibility of current composite system, a better lead-free alternative for energy harvesting, piezo-detection/sensing and structural health monitoring technologies. [Display omitted] • The 0-3 type (Na 0.5 Bi 0.5)TiO 3 /PVDF composites were prepared using a melt-mixing process. • The bulk density, porosity, water absorption, ε 33 T , d 33 , Shore D , and FoM values increase upon increasing NBT-content. • The g 33 was increased up to x = 0.25 and then dropped a little, while tanδ showed the opposite trend with increasing x. • A marked enhancement in the values of contact voltage due to increasing impact height was observed with increasing x. • Low values of water absorption, porosity, tanδ and high values of d 33 , g 33 , FoM , with better voltage responses were found. [ABSTRACT FROM AUTHOR]