Flexible piezoelectric energy-harvesting nanogenerator using supersonically sprayed polyvinylidene fluoride and iron oxide nanocubes
Source abstract
Abstract
Soft wearable electronics are being applied as state-of-the-art self-powered devices based on piezoelectric nanogenerators (PENGs), which provide flexible energy harvesters and sustainable energy generators. We introduce a composite of poly(vinylidene fluoride) (PVDF) and Fe 2O 3 nanocube fillers coated via supersonic cold spraying to obtain substrate-free and flexible films for PENGs. The hydrothermally synthesized Fe 2O 3 nanocubes induce shear stress between Fe 2O 3 and PVDF during supersonic spraying. An optimized sample having 0.77 g Fe 2O 3 in 1 g PVDF produces a piezopotential of 25.6 V and a short-circuit current of 70 μA. In addition, a maximum power density of 44.4 μW·cm −2 is achieved at a load resistance of 1 MΩ. Tapping and bending tests for 1800 s confirm the consistent generation of piezopotentials of 25.6 V and 1.5 V, respectively. The developed Fe 2O 3/PVDF PENG can power several light-emitting diodes, thus showing promise as a device for sustainable power supply.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Dielectric materials and actuators · Electrospun Nanofibers in Biomedical Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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