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A hybrid approach to powering the future: Flexible PVDF-HFP/MWCNT/ hexaferrite nanocomposite films for piezoelectric and hybrid tribo-piezoelectric energy harvesting
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DOI：10.1016/j.mseb.2025.119157.png)
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Abstract
En 中文
Piezoelectric and triboelectric nanogenerators harvest energy from mechanical motion, but based on different mechanisms. Hybrid tribo-piezoelectric nanogenerators (TPNGs) offer a promising approach by harnessing both triboelectric and piezoelectric effects, enhancing energy conversion efficiency. In this paper, we have developed a flexible Poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) nanocomposite film incorporating multiwalled carbon nanotubes (MWCNTs) and W-type hexaferrite (BaCo2Fe16O27) nanoparticles for highperformance energy harvesting. The addition of CNTs enables charge transport, while the hexaferrite phase adds magnetoelectric (ME) coupling, thus increasing charge density and output performance. The synergistic combination of the polymer matrix and nanoscale fillers results in materials with improved electrical and magnetic capabilities, enabling their use in energy harvesting and sensing applications.The structural and functional characterizations of the developed films confirmed the improved beta-phase content, enhanced dielectric, magnetic, ferroelectric properties, and strong ME coupling coefficient of 25.5 mVcm-1 Oe-1.A piezoelectric and hybrid tribo-piezoelectric nanogenerator device was fabricated with PCF20, a sample showing the best ferroelectric, magnetic and magnetoelectric properties. The device could generate a maximum output voltage of 164 V and a power density of 16 mu W/cm2, highlighting the potential of these flexible nanocomposites for next-generation multifunctional materials capable of harnessing diverse environmental stimuli for sustainable energy solutions.
Keywords:
Hybrid nanogenerator
PVDF-HFP
Carbon nanotubes
W -type hexaferrite
Magnetoelectric coupling
Energy harvesting
IoT devices
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