KNN based piezo-triboelectric lead-free hybrid energy films

In recent times, the triboelectric and piezoelectric effects have garnered significant attention towards developing advanced material composites for energy harvesting sensory applications. this work, potassium sodium niobate (KNN) based films (EF) been developed to utilize mechanical while simultaneously taking advantage of mechanisms. The KNN particles were synthesized using a wet ball milling technique then incorporated into polyvinylidene difluoride (PVDF) matrix together with addition multi wall carbon nanotubes (MWCNT). film was used develop nanogenerator (PENG) fitted copper electrodes. output further tested utilizing electrodes, at variable tapping frequency (60 BPM 240 BPM) pressure (10–40 psig) when activating pneumatic piston. open circuit voltage increased increase both pressure. maximum observed be 35.3 V current noted as 15.8 µA. also showed unique signals different types deformations performed under hand utilized build piezo-triboelectric hybrid check its performance. 54.1 29.4 This integrated conventional electronic components (bridge rectifiers, resistors, capacitors) ability harvest energy. can charge 0.1 µF capacitor 9.4 in 60 s. optimum power device measured 0.164 W. attached Kapton 113.2 V. experiment endorsed potential multifunctional applications like force, pressure, motion sensing well lead free harvesting.