Electrospun ZnSnO3/PVDF-HFP Nanofibrous Triboelectric Films for Efficient Mechanical Energy Harvesting
Venkata Siva Kavarthapu, Sontyana Adonijah Graham, Punnarao Manchi, Mandar Vasant Paranjape, Jae Su Yu
Advanced Fiber Materials ›› 2023, Vol. 5 ›› Issue (5) : 1685-1698.
Electrospun ZnSnO3/PVDF-HFP Nanofibrous Triboelectric Films for Efficient Mechanical Energy Harvesting
Nowadays, triboelectric nanogenerators (TENGs) are one of the most emerging technologies owing to their easy and cost-effective device structure. TENGs can harvest mechanical energy from our living environment. Herein, we synthesized dielectric zinc tin oxide (ZnSnO3) nanoparticles (NPs) by a hydrothermal technique. The ZnSnO3 NPs provide a dielectric and piezoelectric effect, which can efficiently enhance the output electrical performance of the proposed TENG. The prepared ZnSnO3 NPs were embedded into a polyvinylidene fluoride hexafluoropropylene (PVDF-HFP) polymer to prepare ZnSnO3/PVDF-HFP nanofibrous films to fabricate a TENG. The output performance of TENG was investigated and optimized by varying the loading concentration of ZnSnO3 NPs in PVDF-HFP fibrous films. The highest voltage, current, charge density, and power density from the fabricated TENG were achieved as ~ 138 V, ~ 5 µA, ~ 52 µC/m2, and ~ 1.6 W/m2, respectively. Additionally, the robustness of the TENG was studied via the long-term mechanical stability test. Finally, the practical and real-time application of the TENG was demonstrated by harvesting mechanical energy to power low-power portable electronic devices. Furthermore, the materials used in the TENG were combined into a skipping rope to harvest biomechanical/mechanical energy while exercising.
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