基于地形工程的PVDF基柔性复合薄膜磁电性能改进

IF 3.3 4区材料科学 Q3 CHEMISTRY, PHYSICAL

Solid State Ionics Pub Date : 2025-06-12 DOI:10.1016/j.ssi.2025.116934

Xiaoling Deng , Shiqi Chen , Weihao Wu , Guiyun Sun , Rongli Gao , Gang Meng , Wei Cai , Chunlin Fu , Songlin Chen

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引用次数: 0

摘要

本研究在溶剂体系中，通过水热调节乙二醇含量和矿化剂，合成了不同形貌的钴铁氧体（CoFe₂O₄，CFO）粉末。随后，采用铸造技术制备了CFO/PVDF复合膜，研究了不同形貌的CFO粉末对PVDF基柔性复合膜磁电性能的影响。实验结果表明，CFO粉末的形貌对复合膜的磁电相互作用行为有显著影响。XRD和SEM分析证实，不同形貌的CFO粉末成功集成到PVDF基体中。此外，复合膜中CFO相的分布和形态与各自CFO粉末的结构特征密切相关。另外的FTIR分析表明，β相在这些复合薄膜中以铁电性为主。值得注意的是，条形CFO粉末促进了PVDF基质中β相的形成。磁电性能测试表明，在不同形状的CFO粉末作用下，CFO/PVDF复合膜表现出显著的磁电耦合效应。特别是，含有条形CFO粉末的复合材料显示出明显的磁电特性，突出了它们在柔性可穿戴传感器以及能量收集和转换设备中的潜在应用。本研究为柔性磁电复合薄膜的设计和应用提供了理论见解和技术支持。

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Improvement of magnetoelectric properties of PVDF based flexible composite films based on topography engineering

In this study, cobalt ferrite (CoFe₂O₄, CFO) powders with different morphologies were synthesized through hydrothermal regulation of glycol content and mineralizing agents within a solvent system. Subsequently, the CFO/PVDF composite films were prepared through a casting techniquethe, the effects of CFO powders with varying morphologies on the magnetoelectric properties of PVDF based flexible composite membranes were investigated. The experimental results indicate that the morphology of CFO powder significantly influences the magnetoelectric interaction behavior of the composite films. XRD and SEM analyses confirmed that CFO powders with distinct morphologies were successfully integrated into the PVDF matrix. Furthermore, the distribution and morphology of the CFO phase within the composite film were closely related to the structural characteristics of the respective CFO powders. Additional FTIR analysis revealed that β-phase was predominant in terms of ferroelectricity within these composite films. Notably, strip-shaped CFO powder facilitated an enhancement in β-phase formation in PVDF matrices. Magnetoelectric performance tests demonstrated that CFO/PVDF composite films exhibited remarkable magnetoelectric coupling effects when influenced by variously shaped CFO powders. In particular, composites incorporating strip-shaped CFO powder displayed pronounced magnetoelectric properties, highlighting their potential applications in flexible wearable sensors as well as energy harvesting and conversion devices. This research provides both theoretical insights and technical support for designing and applying flexible magnetoelectric composite films.

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来源期刊

Solid State Ionics 物理-物理：凝聚态物理

CiteScore

6.10

自引率

3.10%

发文量

152

审稿时长

58 days

期刊介绍： This interdisciplinary journal is devoted to the physics, chemistry and materials science of diffusion, mass transport, and reactivity of solids. The major part of each issue is devoted to articles on: (i) physics and chemistry of defects in solids; (ii) reactions in and on solids, e.g. intercalation, corrosion, oxidation, sintering; (iii) ion transport measurements, mechanisms and theory; (iv) solid state electrochemistry; (v) ionically-electronically mixed conducting solids. Related technological applications are also included, provided their characteristics are interpreted in terms of the basic solid state properties. Review papers and relevant symposium proceedings are welcome.