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Issue 20, 2020
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Investigating the role of carbon nanotubes (CNTs) in the piezoelectric performance of a PVDF/KNN-based electrospun nanogenerator

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Abstract

In the present study, the effect of varying the concentration of carbon nanotubes (CNTs) on the piezoelectric performance of a poly(vinylidene fluoride) (PVDF)/potassium sodium niobate (KNN)-based electrospun nanocomposite has been revealed. The incorporation of 0.1% CNTs in the PVDF/KNN composite results in a significant improvement in the performance of the nanogenerator, with an output voltage of ∼23.24 V, a current of ∼9 μA and a power density of 52.29 μW cm−2 under finger tapping compared with a voltage of ∼12 V, a current of ∼18 μA and a power density of 54 μW cm−2 upon the application of a mechanized compressive force. In fact, the addition of CNTs led to a higher β-fraction in the hybrid nanocomposite. Moreover, the presence of CNTs creates a conducting path in the nanofiller loaded polymer jet, which results in enhanced mechanical stretching of the electrospun fibres. This hybrid lead-free nanogenerator could be a good candidate for use in self-powered portable and wearable electronic goods where a very small amount of power is required.

Graphical abstract: Investigating the role of carbon nanotubes (CNTs) in the piezoelectric performance of a PVDF/KNN-based electrospun nanogenerator

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Article information


Submitted
13 Mar 2020
Accepted
03 May 2020
First published
04 May 2020

Soft Matter, 2020,16, 4876-4886
Article type
Paper

Investigating the role of carbon nanotubes (CNTs) in the piezoelectric performance of a PVDF/KNN-based electrospun nanogenerator

S. Bairagi and S. W. Ali, Soft Matter, 2020, 16, 4876
DOI: 10.1039/D0SM00438C

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