电介质
材料科学
铁电性
电容器
储能
铁电聚合物
聚合物混合物
相(物质)
聚合物
电场
领域(数学)
纳米技术
化学物理
工程物理
光电子学
复合材料
电压
电气工程
热力学
物理
工程类
功率(物理)
数学
量子力学
纯数学
共聚物
作者
Zhe Ma,Zhonghui Shen,Run‐Lin Liu,Xiaoxiao Chen,Yang Shen,Long‐Qing Chen,Ce‐Wen Nan
摘要
Polymer blends are regarded as a straightforward and effective method to enhance the energy storage performance of dielectric film capacitors. However, how the components and structures within the blend systems affect the energy density and efficiency remains insufficiently explored in-depth. In this discourse, employing a polymer blend of ferroelectric and linear dielectric phases as a paradigm, we perform phase-field simulations to elucidate the effects of ferroelectric phase volume fractions, geometrical dimensions, and the dielectric constant of the linear phase on the energy storage capabilities. Concurrently, we have devised six divergent blending microstructures to probe the ramifications of structural variances on the overarching performance metrics. We also analyze the domain configurations and switching dynamics under varying electric fields to understand the performance variations and delineate the determinants conducive to superior energy density and efficiency. This paper theoretically establishes the component–content–structure–performance relationships of different polymer blend systems, which is expected to better guide the innovative design of new polymer blend dielectrics.
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