Flexible and Wearable Piezoelectric Nanogenerator based on Three-phase Composite Film for Energy Harvesting and Mechanosensing

Bera, Pounomi and Kundu, Susmita and Sen, Shrabanee (2025) Flexible and Wearable Piezoelectric Nanogenerator based on Three-phase Composite Film for Energy Harvesting and Mechanosensing. In: 36th AGM of MRSI & 7th Indian Materials Conclave & International Conference on Emerging Materials 2025 , 17-20 December 2025, NISER Bhubaneswar, Odisha. (Submitted)

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Abstract

A sustainable, self-powered energy source that addresses people's energy crises is highly sought after, given the current state of the energy industry. Our study demonstrates the fabrication of a flexible piezoelectric energy harvester based on PVDF/ZnTiO3/rGO composite that can harvest energy from various mechanical stimuli as a sustainable energy source. We investigated the impact of the two fillers on PVDF's piezoelectric and dielectric properties. The optimized composite film composed of PVDF-5wt% ZnTiO3/1wt% rGO (5PZTR1) exhibited good adaptability for flexible dielectrics with a higher dielectric constant (~10) and lower dielectric loss value (0.05 at 1kHz). With regard to its increased polarization, the composite film is the best choice for mechanical energy harvesting applications. The piezoelectric energy harvester (PEH) using 5PZTR1 generated an open circuit peak to peak a.c. voltage of around 37V after repetitive human finger tapping. This was in contrast to 7V and 28V for clean PVDF and PVDF/ZT (on 5wt% of ZnTiO3 concentration). For practical use in real life, commercial LEDs can be lighted with a rectified voltage of around 20V. Since the piezoelectric energy harvesting device can respond to various kinds of applied mechanical stress and human body part movements, it acts as a self-powered system with a maximum power density of about 121µW/cm2. This piezoelectric energy harvester is therefore a strong alternative for a self-sufficient monitoring system.

Item Type:	Conference or Workshop Item (Poster)
Subjects:	Electronics Engineering Materials
Divisions:	Sensor and Actuator
Depositing User:	Ms Upasana Sahu
Date Deposited:	23 Sep 2026 09:05
Last Modified:	23 Sep 2026 09:05
URI:	https://cgcri.csircentral.net/id/eprint/5786

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