Recent Advances in Ferroelectret Fabrication, Performance Optimization, and Applications.

Autor: Wang N; School of Technology, Beijing Forestry University, Beijing, 100083, China., Zhang H; School of Technology, Beijing Forestry University, Beijing, 100083, China., Qiu X; Shanghai Key Laboratory of Intelligent Sensing and Detection Technology, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China., Gerhard R; Institute of Physics and Astronomy, Faculty of Science, University of Potsdam, 14476, Potsdam-Golm, Germany., van Turnhout J; Department of Materials Science and Engineering, Delft University of Technology, Delft, 2628 CD, The Netherlands., Cressotti J; Electrical Insulation Research Center, Institute of Materials Science, University of Connecticut, Storrs, CT, 06269, USA., Zhao D; School of Technology, Beijing Forestry University, Beijing, 100083, China., Tang L; School of Technology, Beijing Forestry University, Beijing, 100083, China., Cao Y; Electrical Insulation Research Center, Institute of Materials Science, University of Connecticut, Storrs, CT, 06269, USA.
Jazyk: angličtina
Zdroj: Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2024 May 08, pp. e2400657. Date of Electronic Publication: 2024 May 08.
DOI: 10.1002/adma.202400657
Abstrakt: The growing demand for wearable devices has sparked a significant interest in ferroelectret films. They possess flexibility and exceptional piezoelectric properties due to strong macroscopic dipoles formed by charges trapped at the interface of their internal cavities. This review of ferroelectrets focuses on the latest progress in fabrication techniques for high temperature resistant ferroelectrets with regular and engineered cavities, strategies for optimizing their piezoelectric performance, and novel applications. The charging mechanisms of bipolar and unipolar ferroelectrets with closed and open-cavity structures are explained first. Next, the preparation and piezoelectric behavior of ferroelectret films with closed, open, and regular cavity structures using various materials are discussed. Three widely used models for predicting the piezoelectric coefficients (d 33 ) are outlined. Methods for enhancing the piezoelectric performance such as optimized cavity design, utilization of fabric electrodes, injection of additional ions, application of DC bias voltage, and synergy of foam structure and ferroelectric effect are illustrated. A variety of applications of ferroelectret films in acoustic devices, wearable monitors, pressure sensors, and energy harvesters are presented. Finally, the future development trends of ferroelectrets toward fabrication and performance optimization are summarized along with its potential for integration with intelligent systems and large-scale preparation.
(© 2024 Wiley‐VCH GmbH.)
Databáze: MEDLINE
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