An ultra high performance, lead-free Bi2WO6:P(VDF-TrFE)-based triboelectric nanogenerator for self-powered sensors and smart electronic applications

Bharti, Dhiraj Kumar and Veeralingam, Sushmitha and Badhulika, Sushmee (2022) An ultra high performance, lead-free Bi2WO6:P(VDF-TrFE)-based triboelectric nanogenerator for self-powered sensors and smart electronic applications. Materials Horizons, 9 (2). pp. 663-674. ISSN 2051-6347

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Abstract

Obtaining sustainable, high output power supply from triboelectric nanogenerators still remains a major issue that restricts their widespread use in self-powered electronic applications. In this work, an ultra-high performance, non-toxic, flexible triboelectric nanogenerator based on bismuth tungstate (Bi2WO6):polyvinylidene fluoride-trifluoroethylene (P(VDF-TrFE)) is fabricated. A hydrothermal technique is used to synthesize highly crystalline Bi2WO6 nanoparticles that are then incorporated inside the P(VDF-TrFE) matrix nanofiber mat using electrospinning over an aluminum-coated PET substrate to yield a nanogenerator with a device configuration of Cu-coated PET/(Bi2WO6:P(PVDF-TrFE)) nanofiber mat/Al-coated PET. The highly crystalline nature of the biconcave shaped Bi2WO6 nanoparticles and β-P(VDF-TrFE) is confirmed by X-ray powder diffraction (XRD) and Raman spectroscopic techniques. The dielectric constant of the Bi2WO6:P(PVDF-TrFE) nanofiber mat was studied and a high dielectric constant of 44 was observed. The as-fabricated nanogenerator delivers a very high output voltage (open circuit) of 205 V and current density (short circuit) of 11.91 mA m-2 at ∼0.15 kgf without any electric poling, which is higher than all the prior reports in this field. The fabricated nanogenerator possesses very high output stability and ultra-sensitivity with a swift response time of 60 ms. This outstanding performance of the nanogenerator can be ascribed to the synergistic combination of the β-phase P(VDF-TrFE) polymer and non-centrosymmetric nature of Bi2WO6 nanoparticles. Furthermore, a Bi2WO6-based pH sensor is driven by the energy obtained from the as-fabricated nanogenerator and the real time demonstration of the nanogenerator powering a calculator is also demonstrated. The strategy outlined here presents a cost-effective, high performance alternative for driving various portable bio-compatible self-powered electronic devices. This journal is © The Royal Society of Chemistry.

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IITH Creators:

IITH Creators	ORCiD
Badhulika, Sushmee	https://orcid.org/0000-0003-3237-3031

Item Type:

Article

Additional Information:

SB acknowledges financial assistance from Defence Research Development Organization funding DYSL-AST/CARS/CONTRACT/20-21/02.

Uncontrolled Keywords:

Electronics applications; Lead-Free; Nanofiber mats; Nanogenerators; Performance; PVDF-TrFE; P[VDF-TrFE]; Self-powered; Sensor electronics; Ultra high performance

Subjects:

Electrical Engineering

Divisions:

Department of Electrical Engineering

Depositing User:

. LibTrainee 2021

Date Deposited:

13 Jul 2022 10:50

Last Modified:

13 Jul 2022 10:50

URI:

http://raiithold.iith.ac.in/id/eprint/9671