Flexible P(VDF–TrFE)/BNT–BT composite films and their dielectric, ferroelectric and energy storage properties

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Research Pub Date : 2024-09-06 DOI:10.1557/s43578-024-01404-7

P. S. Lekshmi Priya, S. Behera, S. Parida, Abhisek Choudhary, Dhiraj Kumar Rana

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Abstract

The dielectric, ferroelectric and energy storage properties of 0–3 composite systems with 0.92(Bi_0.5Na_0.5)TiO₃–0.08BaTiO₃(BNT–BT) ceramics and Poly(vinylidene fluoride trifluoroethylene) P(VDF–TrFE) copolymer were investigated. The composites are prepared by solvent casting followed by hot-pressing technique. The presence of good ferroelectric properties in the composites is confirmed by the electroactive β-phase which was found to be more than 80% in almost all the composites. The inorganic ceramic fillers improve the dielectric properties of the ceramics. The polarisation response in the composite film increases because of the interface effect between the polymer matrix and ceramic filler. The room-temperature ferroelectric hysteresis loops indicate an increase in remnant polarisation of the matrix with the concentration of filler. The energy storage density efficiency of the composites changes from 81 to 58% upon adding the ceramic filler. Piezoelectric properties of P(VDF–TrFE)–0.92(Bi_0.5Na_0.5)TiO₃–0.08BaTiO₃ composite were also investigated and found to be increased. So this composite is preferable for energy storage as well as harvesting applications.

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柔性 P（VDF-TrFE）/BNT-BT 复合薄膜及其介电、铁电和储能特性

研究了 0.92（Bi0.5Na0.5）TiO3-0.08BaTiO3（BNT-BT）陶瓷和聚（偏氟乙烯-三氟乙烯）P（VDF-TrFE）共聚物 0-3 复合材料体系的介电性能、铁电性能和储能性能。复合材料是通过溶剂浇铸和热压技术制备的。在几乎所有的复合材料中，电活性 β 相的含量都超过了 80%，这证实了复合材料具有良好的铁电特性。无机陶瓷填料改善了陶瓷的介电性能。由于聚合物基体和陶瓷填料之间的界面效应，复合薄膜的极化响应增加。室温铁电磁滞回线表明，随着填料浓度的增加，基体的残余极化也会增加。添加陶瓷填料后，复合材料的能量存储密度效率从 81% 变为 58%。还研究了 P(VDF-TrFE)-0.92(Bi0.5Na0.5)TiO3-0.08BaTiO3 复合材料的压电特性，发现其压电特性有所提高。因此，这种复合材料适用于能量存储和采集应用。

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来源期刊

Journal of Materials Research 工程技术-材料科学：综合

CiteScore

4.50

自引率

3.70%

发文量

362

审稿时长

2.8 months

期刊介绍： Journal of Materials Research (JMR) publishes the latest advances about the creation of new materials and materials with novel functionalities, fundamental understanding of processes that control the response of materials, and development of materials with significant performance improvements relative to state of the art materials. JMR welcomes papers that highlight novel processing techniques, the application and development of new analytical tools, and interpretation of fundamental materials science to achieve enhanced materials properties and uses. Materials research papers in the following topical areas are welcome. • Novel materials discovery • Electronic, photonic and magnetic materials • Energy Conversion and storage materials • New thermal and structural materials • Soft materials • Biomaterials and related topics • Nanoscale science and technology • Advances in materials characterization methods and techniques • Computational materials science, modeling and theory