Improving energy storage performance of PbZrO3-Al2O3 composite thin films by regulating distribution of Al2O3 nanoparticles

IF 2.3 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of Sol-Gel Science and Technology Pub Date : 2024-07-15 DOI:10.1007/s10971-024-06485-8

Yu Xin Lin, Yan Shao, Bo Wang, Bo Han, Shiying Liu, Yu Bai, Zhan Jie Wang

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Abstract

A key factor affecting the energy storage performance of antiferroelectric materials is their electrical breakdown strength. Nanocomposition is one of the effective methods to improve the electrical breakdown strength of dielectric thin films. In this study, PbZrO₃‒Al₂O₃ nanoparticle composite films were prepared by combining chemical solution deposition of PbZrO₃ and vacuum evaporation deposition of Al, and the influence of size and distribution of Al₂O₃ nanoparticles (NPs) on electrical properties was investigated. The results show that the Al₂O₃ NPs are distributed in a layered form on the PZO matrix, and their distribution can be controlled by changing the thickness of PZO coatings. As the coating thickness decreases and the coating interface increases, the distribution of Al₂O₃ NPs becomes more uniform, resulting in a significant increase in maximum polarization and electrical breakdown strength, and a decrease in leakage current density, thereby enhancing the energy storage performance of the PbZrO₃-Al₂O₃ composite films. The results indicate that the regulation of the microstructure of dielectric composite films is of great significance for improving their energy storage performance.

Graphical Abstract

The P-E hysteresis loops and polarization current curves of the PZO film (a) and the PZO-AO composite films of (b) PZO4-AO, (c) PZO5-AO, and (d) PZO6-AO.

Abstract Image

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通过调节 Al2O3 纳米粒子的分布提高 PbZrO3-Al2O3 复合薄膜的储能性能

影响反铁电材料储能性能的一个关键因素是其电击穿强度。纳米复合是提高介电薄膜电击穿强度的有效方法之一。本研究采用化学溶液沉积 PbZrO3 和真空蒸发沉积 Al 的方法制备了 PbZrO3-Al2O3 纳米粒子复合薄膜，并研究了 Al2O3 纳米粒子（NPs）的尺寸和分布对电性能的影响。结果表明，Al2O3 NPs 在 PZO 基体上呈层状分布，其分布可通过改变 PZO 涂层的厚度来控制。随着涂层厚度的减小和涂层界面的增大，Al2O3 NPs 的分布变得更加均匀，导致最大极化和电击穿强度显著提高，漏电流密度降低，从而提高了 PbZrO3-Al2O3 复合薄膜的储能性能。结果表明，调控电介质复合薄膜的微观结构对提高其储能性能具有重要意义。图文摘要PZO薄膜（a）和PZO-AO复合薄膜（b）PZO4-AO、（c）PZO5-AO和（d）PZO6-AO的P-E滞后环和极化电流曲线。

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来源期刊

Journal of Sol-Gel Science and Technology 工程技术-材料科学：硅酸盐

CiteScore

4.70

自引率

4.00%

发文量

280

审稿时长

2.1 months

期刊介绍： The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.