This paper presents and compares films made using the solution casting method with a mixture of poly (vinylidene fluoride‐co‐hexafluoropropylene) (PVDF‐HFP), graphene oxide (GO), and lead zirconate titanate (PZT). The Hummers' method synthesized GO. Scanning electron microscopy (SEM), Fourier‐transform infrared spectroscopy (FTIR), X‐ray diffraction (XRD), differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA), and tensile testing were realized. The developed composite films were found to have a coherent distribution of PZT and GO in PVDF‐HFP. After that, a gradual improvement, such as an increase in the quantity of β phase, produces high piezoelectric performance. Also, the PVDF‐HFP polymer's thermal stability improved. When 0.1 wt% of PZT/GO was added, the melting temperature increased from 140 to 143°C, and the crystallization temperature from 109 to 113°C. PVDF‐HFP elastic modulus and tensile strength were also considerably reduced as PZT/GO increased. As a result, this has enabled us to develop composite films with important properties that can be used as piezoelectric materials for energy harvesting.

Energy harvesting is the most efficient way to meet energy demand while also supplying renewable energy sources from the environment. This technology consists of the recovery of electrical energy from lost energy sources, which are available everywhere, including heat, fluids, vibrations, etc. In particular, energy harvesting via piezoelectric materials, which are capable of converting the energy of vibrations and mechanical deformations into electrical energy, has been the subject of research in the last decade. This energy is used in a variety of applications, including energy collectors, sensors, and actuators, among others. In this paper, a series of thin polymers films based on Poly (methyl methacrylate) (PMMA), Poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP), and Lead zirconate titanate (PZT) nanoparticles were prepared using solvent casting technique in Tetrahydrofuran (THF) solvent with different percentages of PVdF-HFP and PZT, to improve piezoelectric properties of PMMA. Improvement in piezoelectric properties has confirmed by Polarized Optical Microscope (POM), Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectrometry (FTIR),X-ray diffraction (XRD) ,Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC), and Tensile testing. The nanocomposite films that were prepared can be used for energy storage and harvesting.