Flexible piezoelectric and hybrid nanogenerators based on single layered and stacked multilayered PVDF/CoFe2O4/KNaNbO3 composite electrospun nanofibers

IF 4.1 2区化学 Q2 POLYMER SCIENCE

Polymer Pub Date : 2025-03-10 DOI:10.1016/j.polymer.2025.128257

C.S Chitra Lekha , Sreelakshmi Moozhiyil Purushothaman , Shaik Ruksana Begum , Prabavathi Munirathinam , Arunkumar Chandrasekhar , Maïté Fernandes Tronco , Marc Ponçot , Bruno Ameduri , Sabu Thomas , Isabelle Royaud , Didier Rouxel , Nandakumar Kalarikkal

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引用次数: 0

Abstract

Poly(vinylidene fluoride) (PVDF) nanofibrous films, produced through electrospinning, offer high fraction of electroactive phases, high surface-to-volume ratio, porosity, low weight, and increased length, making them promising candidates for portable and self-powered device technology. Apart from electrospinning, the addition of nanofillers is known to enhance the electroactive responses of PVDF. This work investigates the influence of magnetostrictive and ferromagnetic CoFe₂O₄ (CFO) and highly piezoelectric KNaNbO₃ (KNN) ceramics, dispersed in a lead-free PVDF matrix, serving as magnetic and electric counterparts, respectively. The incorporation of CFO and KNN nanoparticles enhanced the β-phase content of PVDF nanofibers and improved its dielectric and mechanical strength. The energy harvesting performance of the different PVDF-nanocomposites was studied in detail by fabricating single layered piezoelectric nanogenerators (PENGs), stacked multi-layered (SML) PENGs, and hybrid piezo-tribo nanogenerators. The hybrid device based on PVDF/CFO exhibited a peak output voltage of 120 V, a short-circuit current of 21 μA under 9 N applied force, and a power density of 28.5 μW/cm² at 10⁷ Ω load resistance. Hence, the present system could act as an active component in self-sustainable and portable mechanical energy harvesting devices and sensors.

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来源期刊

Polymer 化学-高分子科学

CiteScore

7.90

自引率

8.70%

发文量

959

审稿时长

32 days

期刊介绍： Polymer is an interdisciplinary journal dedicated to publishing innovative and significant advances in Polymer Physics, Chemistry and Technology. We welcome submissions on polymer hybrids, nanocomposites, characterisation and self-assembly. Polymer also publishes work on the technological application of polymers in energy and optoelectronics. The main scope is covered but not limited to the following core areas: Polymer Materials Nanocomposites and hybrid nanomaterials Polymer blends, films, fibres, networks and porous materials Physical Characterization Characterisation, modelling and simulation* of molecular and materials properties in bulk, solution, and thin films Polymer Engineering Advanced multiscale processing methods Polymer Synthesis, Modification and Self-assembly Including designer polymer architectures, mechanisms and kinetics, and supramolecular polymerization Technological Applications Polymers for energy generation and storage Polymer membranes for separation technology Polymers for opto- and microelectronics.