Effect of multilayer structure on energy storage characteristics of PVDF ferroelectric polymer

2022 4th International Conference on Intelligent Control, Measurement and Signal Processing (ICMSP) Pub Date : 2022-07-08 DOI:10.1109/ICMSP55950.2022.9859048

Yang Cui, Yikai Ma, Yudong Zhang, Xi Lin, Si-bao Zhang, Tianbin Si, Changhai Zhang

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Abstract

Dielectric capacitors have attracted attention as energy storage devices that can achieve rapid charge and discharge. But the key to restricting its development is the low energy storage density of dielectric materials. Polyvinylidene fluoride (PVDF), as a polymer with high dielectric properties, is expected to improve the energy storage density of dielectric materials. In this work, the multilayer structure of PVDF ferroelectric polymer is designed, and the influence of the number of layers on the maximum polarization, remanent polarization, applied electric field and energy storage density of the dielectric material is studied. The final obtained double-layer PVDF obtained a discharge energy storage density of 10.6 J/cm3 and an efficiency of 49.1% at an electric field of 410 kV/mm; the three-layer PVDF obtained a discharge energy storage density of 11.0 J/cm3 and an efficiency of 37.2% at an electric field of 440 kV/mm.

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多层结构对PVDF铁电聚合物储能特性的影响

介质电容器作为一种能够实现快速充放电的储能器件而受到人们的关注。但制约其发展的关键是电介质材料储能密度低。聚偏氟乙烯(PVDF)作为一种具有高介电性能的聚合物，有望提高介电材料的储能密度。本文设计了PVDF铁电聚合物的多层结构，研究了层数对介质材料最大极化、剩余极化、外加电场和储能密度的影响。最终获得的双层PVDF在410 kV/mm电场下的放电储能密度为10.6 J/cm3，效率为49.1%;在440 kV/mm电场下，三层PVDF的放电储能密度为11.0 J/cm3，效率为37.2%。

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2022 4th International Conference on Intelligent Control, Measurement and Signal Processing (ICMSP)

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