Organic-inorganic crosslinking PVDF composites for high storage densities

IF 8.3 1区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES Composites Science and Technology Pub Date : 2025-01-28 DOI:10.1016/j.compscitech.2025.111082

Qianqian Yu , Haijun Wang , Yisha Ma , Shaojuan Wang , Jian Hu , Hao Zhang , Tong Wang , Leipeng Liu , Shouke Yan

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Abstract

The rapid development of modern electronic and electrical applications has attracted extensive attention to dielectric polymer matrix composites with high dielectric constant and energy density. In this study, an organic-inorganic homogeneous composite with improved phase interface was prepared by physically cross-linking amorphous calcium sulfate oligomers (CSOs) with PVDF chains. The dielectric properties and energy storage properties of the composite films were improved by controlling the microstructure of PVDF composite films by CSOs. The results show that the addition of CSOs has a strong inducing effect on the polarity of PVDF, while reducing the crystallinity and crystallite size of PVDF, thereby improving the breakdown performance of the composites. When the applied electric field is 324 kV/mm, the maximum energy storage density is 16.12 J/cm³ and the energy storage efficiency is maintained at 87.17 %. Therefore, this work provides a new strategy for the preparation of high-performance polymer-based energy storage materials.

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来源期刊

Composites Science and Technology 工程技术-材料科学：复合

CiteScore

16.20

自引率

9.90%

发文量

611

审稿时长

33 days

期刊介绍： Composites Science and Technology publishes refereed original articles on the fundamental and applied science of engineering composites. The focus of this journal is on polymeric matrix composites with reinforcements/fillers ranging from nano- to macro-scale. CSTE encourages manuscripts reporting unique, innovative contributions to the physics, chemistry, materials science and applied mechanics aspects of advanced composites. Besides traditional fiber reinforced composites, novel composites with significant potential for engineering applications are encouraged.