Multilayered Piezoelectric Nanogenerator Based on Lead-Free Poly(vinylidene fluoride)-(0.67BiFeO3-0.33BaTiO3) Electrospun Nanofiber Mats for Fast Charging of Supercapacitors

Muduli, Sakti Prasanna and Veeralingam, Sushmitha and Badhulika, Sushmee (2022) Multilayered Piezoelectric Nanogenerator Based on Lead-Free Poly(vinylidene fluoride)-(0.67BiFeO3-0.33BaTiO3) Electrospun Nanofiber Mats for Fast Charging of Supercapacitors. ACS Applied Energy Materials, 5 (3). pp. 2993-3003. ISSN 2574-0962

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Abstract

Polymer-based piezoelectric nanogenerators (PENG) produce satisfactory voltage but low current outputs. Herein, a flexible, multilayered PENG with a high power density is demonstrated based on poly(vinylidene fluoride) (PVDF)-[0.67(BiFeO3)-0.33(BaTiO3)] (BF33BT) electrospun nanofiber mats. With a maximum β-phase and piezoresponse, the optimized composite with 30 wt % BF33BT was used to fabricate the multilayered PENG (MPENG). The MPENG, comprising three layers, shows an open-circuit voltage, short-circuit current, and instantaneous power density of 83 V, 1.62 μA, and 142 mW m-2, respectively, by applying a compressive force of 0.1 kgf at 3 Hz frequency. This power density is almost three times more than that of a single-layer composite-based PENG and 65 times more than that of a single-layer PENG of pristine PVDF. The exceptional piezoresponse is due to the combined effect of the piezoceramic and multilayered structures. The MPENG was used to charge a supercapacitor (0.047 F) up to 1.5 V in 660 s to power a calculator. The device showed no performance degradation for more than 5000 cycles, thus opening up promising avenues for sustainable energy harvesting applications. © 2022 American Chemical Society. All rights reserved.

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IITH Creators:
IITH CreatorsORCiD
Badhulika, Sushmeehttps://orcid.org/0000-0003-3237-3031
Item Type: Article
Additional Information: S.P.M. acknowledges Dr. Karnan Manickavasakam for characterization of the supercapacitor. S.B. acknowledges financial assistance from Defence Research Development Organization Young Scientist Laboratory-Smart Materials (DRDO DYSL −SM) grant DYSL-SM/CARS-04.
Uncontrolled Keywords: composite nanofiber; energy harvesting; morphotropic phase boundary; multilayered piezoelectric nanogenerator; PVDF-BF33BT
Subjects: Electrical Engineering
Divisions: Department of Electrical Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 22 Jul 2022 09:10
Last Modified: 22 Jul 2022 09:10
URI: http://raiith.iith.ac.in/id/eprint/9531
Publisher URL: http://doi.org/10.1021/acsaem.1c03648
OA policy: https://v2.sherpa.ac.uk/id/publication/37813
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