A ferroelectric nanocomposite-film-based device for harvesting energy from water droplets using both piezoelectric and triboelectric effects. (8th September 2021)

• Record Type: Journal Article
• Authors: Singh, Huidrom Hemojit; Khare, Neeraj
• Is Part Of: Nanotechnology. Volume 32:Number 48(2021)
• Publication Date: 2021-09-08
• Subjects: ferroelectrics -- nanocomposites -- piezoelectric materials -- triboelectricity; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/ac171b
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: In this paper, we have demonstrated a novel design of a liquid–solid interface triboelectric nanogenerator based on a ZnO- polyvinylidene fluoride (PVDF) flexible ferroelectric film that employs both piezoelectric and triboelectric properties to produce more electricity from water droplets. The present device gives an output voltage of ∼1.32 V and a short-circuit current of ∼0.32 μ A from the conventional liquid–solid triboelectric nanogenerator (LSTENG), while an additional open-circuit voltage of ∼2.72 mV and short-circuit current of ∼20 nA is generated from the piezoelectric effect. The mechanism for generating energy in both the piezoelectric and triboelectric components is also discussed. Furthermore, we explored the effect of ions in water on the performance of the LSTENG, and the results were confirmed by Kelvin probe force microscopy measurements. The current work reveals a new LSTENG design and the benefit of employing a ferroelectric polymer as the contacting material rather than other non-piezoelectric materials for the LSTENG.