Sasmal, Abhishek and Sen, Shrabanee and Chelvane, J Arout and Arockiarajan, A (2023) PVDF based flexible magnetoelectric composites for capacitive energy storage, hybrid mechanical energy harvesting and self-powered magnetic field detection. Polymer, 281. Art No-126141. ISSN 0032-3861

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Here we develop YFeO3-poly(vinylidene fluoride) (YFO-PVDF) based composite systems (with varied concentration of YFO in PVDF) and explore their multifunctional applicability including dielectric, piezoelectric, capacitive energy storage, mechanical energy harvesting, and magnetoelectric performances. The 5 wt% YFO loaded PVDF (5 YF) film has exhibited the highest polar phase percentage of -85%. On the other hand, the study of energy storage performance has shown the highest energy storage density for 3 wt% YFO loaded PVDF (3 YF) film. Owing to its highest polar phase and space charge polarization, the 5 YF film has shown the highest mechanical energy harvesting performance with open circuit voltages of -10 and 74 V and power densities of -2 and 47 & mu;W/cm2 from the corresponding piezoelectric and piezo-tribo hybrid devices, respectively. The fabricated composite films have also shown good magnetoelectric (ME) properties with an ME coupling coefficient (& alpha;33) of -5.2 mV cm-1 Oe- 1 (at 1 kHz frequency and 0.8 kOe applied DC field) for the poled 5 YF film. The application of an external magnetic field has shown the ability to tune the mechanical energy harvesting performances of both the piezoelectric and piezo-tribo hybrid devices which suggests their future application in self-powered magnetic field sensing.

Item Type: Article
Subjects: Electronics
Depositing User: Bidhan Chaudhuri
Date Deposited: 13 Oct 2023 08:29
Last Modified: 13 Oct 2023 08:29

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