Journal of Nanomedicine & Nanotechnology

Flexible eco-friendly Piezoelectric Nanogenerator based on BTO NWs and PVDF composite

26^th International Conference on ADVANCED NANOSCIENCE AND NANOTECHNOLOGY

December 05-06, 2022 | Dubai, UAE

Snehamoyee Hazra, Ankita Ghatak, Arnab Ghosh, Subhamita Sengupta, A K Raychaudhuri and Barnali Ghosh

S. N. Bose National Centre for Basic Sciences, India
CSIR-Central Glass and Ceramic Research Institute, India
University of Engineering & Management (UEM), India

Posters & Accepted Abstracts: J Nanomed Nanotechnol

Abstract:

We report a systematic pathway for fabrication of environment friendly flexible piezoelectric nanogenerator (PENG) with high energy output and low internal resistance. The ferroelectric Polyvinylidene fluoride (PVDF) composite incorporated with hydrothermally synthesized highly piezoelectric Barium titanate (BaTiO3) nanowires is used as the generating material. The single-layered flexible piezoelectric nanogenerator can deliver output power density of 10 μW/cm2 and an output voltage of 2 V with a nominal mechanical load of 1 kPa. BaTiO3 (BTO) NWs of different concentrations were incorporated into PVDF to tune the polar phase content, internal resistance, and optimize the output power. We show that there exists a critical value of BTO NWs loading of 15 wt%, beyond which the piezoelectric energy harvesting characteristics of the PVDF nanocomposites decrease. The oxygen vacancies present in the BTO NWs surface influence the interface property and favour the formation of strongly polar β phase. The combination of various physical properties including the high dielectric constant, large polar phase content, and low internal resistance as well as larger a.c conductivity contributed to the enhanced energy output. A super-capacitor of high capacitance was integrated with the PENG and was charged for driving microelectronic devices. Recent publications 1. Hazra, Snehamoyee & Ghatak, Ankita & Sengupta, Subhamita & Raychaudhuri, Arup & Ghosh, Barnali. (2022). Enhanced Piezoelectric response in BTO NWs-PVDF composite through tuning of polar phase content. Nanotechnology. 2. Hazra, Snehamoyee & Sengupta, Subhamita & Ratha, Soumyaranjan & Ghatak, Ankita & Raychaudhuri, Arup & Ghosh, Barnali. (2021). Piezoelectric Nanogenerators based on Lead Zirconate Titanate nanostructures: An insight into the effect of potential barrier and morphology on the output power generation. Nanotechnology. 33(15)

Biography :

Snehamoyee Hazra pursuing her PhD at S.N. Bose National Centre for Basic Sciences. She is working in synthesis of nanomaterials and fabrication of nanoscale energy harvesting devices. She has published papers in reputed journals and granted patent in the area of piezoelectric energy harvesting by using nanostructured materials.