Nanofiller Orientation-enhanced electrocaloric effect: A case study of P(VDF-TrFE-CFE)/Ba0.67Sr0.33TiO3 composites

IF 9.6 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materiomics Pub Date : 2025-06-26 DOI:10.1016/j.jmat.2025.101105

Cancan Shao, Xiaoming Shi, Ke Xu, Rongzhen Gao, Shiyu Tang, Zhaobo Liu, Houbing Huang

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Abstract

The exceptional breakdown field strength of polymers, combined with the large spontaneous polarization exhibited by inorganic ferroelectric materials, has led to continuous advancements in the records for the giant electrocaloric effect (ECE) in polymer composites enhanced by ferroelectric inorganic components. This study aims to investigate the ECE properties of P(VDF-TrFE-CFE)/Ba0.67Sr0.33TiO3 (BST67) composites by analyzing the aspect ratio, composition ratio, and orientation of BST67 nanoparticles in conjunction with the P(VDF-TrFE-CFE) matrix. The results of the P–E loop calculations indicate that all three factors related to the BST67 nanoparticles enhance the ferroelectric polarization value of the composite material. This enhancement is attributed to the longer aspect ratio, higher composition ratio, and improved orientation, which enable the BST67 nanoparticles to achieve a greater electric field strength. The calculation of ΔT using the LGD method reveals that these three factors of BST67 can independently increase ΔT, and they exhibit a synergistic effect on the ECE performance of the ferroelectric polymer. Our conclusions provide valuable insights for future research on ECE in polymer/inorganic ferroelectric composites.

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纳米填料取向增强的热效应：以P(VDF-TrFE-CFE)/Ba0.67Sr0.33TiO3复合材料为例

聚合物特殊的击穿场强，加上无机铁电材料表现出的大自发极化，导致铁电无机组分增强聚合物复合材料的巨电热效应（ECE）记录不断进步。本研究旨在通过分析BST67纳米颗粒与P（VDF-TrFE-CFE）基体的长宽比、组成比和取向，研究P(VDF-TrFE-CFE)/Ba0.67Sr0.33TiO3 （BST67）复合材料的ECE性能。P-E环计算结果表明，与BST67纳米颗粒相关的三个因素均增强了复合材料的铁电极化值。这种增强归功于更长的长宽比、更高的组成比和改进的取向，这使得BST67纳米颗粒能够获得更大的电场强度。利用LGD法计算ΔT可知，BST67的这三个因素可以独立增加ΔT，它们对铁电聚合物的ECE性能表现出协同效应。我们的结论为今后聚合物/无机铁电复合材料中ECE的研究提供了有价值的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Materiomics Materials Science-Metals and Alloys

CiteScore

14.30

自引率

6.40%

发文量

331

审稿时长

37 days

期刊介绍： The Journal of Materiomics is a peer-reviewed open-access journal that aims to serve as a forum for the continuous dissemination of research within the field of materials science. It particularly emphasizes systematic studies on the relationships between composition, processing, structure, property, and performance of advanced materials. The journal is supported by the Chinese Ceramic Society and is indexed in SCIE and Scopus. It is commonly referred to as J Materiomics.