High-performance lead free piezoelectric Y2O3-Ba(Ti0.96Sn0.04)O3 nanofibers based flexible nanogenerator as energy harvester and self-powered vibration sensor


Efficient, eco-friendly, flexible and high energy output piezoelectric nanogenerator is very much desirable for the development of multifunctional miniaturize devices and sensors. Aspect ratio ~ 102 and boosted energy harvesting attributes of lead-free piezoelectric Y2O3-Ba(Ti0.96Sn0.04)O3 nanofibers have considered for fabricating a flexible nanogenerator. The nanofibers have been synthesized using sol–gel and followed by electro-spinning process. The sintering temperature optimizes at 700 °C to obtain the best quality nanofibers having a diameter in the range from 67 to 132 nm. Rietveld refinement analysis of the X-ray diffraction pattern revealed the substitution of yttrium 30% on titanium (B-site) and 10% on barium (A-site) sites of ABO3 structure. Efforts have made for the development of Y2O3-Ba(Ti0.96Sn0.04)O3 nanofibers based nanogenerator using a simple, cost-effective and scalable approach. The open-circuit voltage (peak-peak) ~ 25 V and the maximum power density ~ 6.5 mW/cm3 have obtained from the developed nanogenerator. Further, the performance of the Y2O3-Ba(Ti0.96Sn0.04)O3 nanofibers based nanogenerator is investigated as a frequency sensor by measuring output voltage as a function of frequency.

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The authors thank the director and all members of the ceramic division, Naval Materials Research Laboratory for their support. Also, the authors thank the vice-chancellor, DIAT for the encouragement.

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Correspondence to Durga Prasad Chadalapaka or Himanshu Sekhar Panda.

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Chary, K.S., Chadalapaka, D., Kumbhar, C.S. et al. High-performance lead free piezoelectric Y2O3-Ba(Ti0.96Sn0.04)O3 nanofibers based flexible nanogenerator as energy harvester and self-powered vibration sensor. J Mater Sci: Mater Electron 32, 113–124 (2021). https://doi.org/10.1007/s10854-020-04710-y

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