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Evaluating the energy storage performance of polymer blends by phase-field simulation

Applied Physics Letters, ISSN: 0003-6951, Vol: 125, Issue: 7
2024
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Article Description

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.

Bibliographic Details

Zhe Ma; Zhong Hui Shen; Run Lin Liu; Xiao Xiao Chen; Yang Shen; Ce Wen Nan; Long Qing Chen

AIP Publishing

Physics and Astronomy

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