Enhancing energy storage properties via controlled insulation properties of PVDF-based polymer capacitors

IF 5.4 2区医学 Q2 MATERIALS SCIENCE, BIOMATERIALS

ACS Biomaterials Science & Engineering Pub Date : 2024-10-08 DOI:10.1016/j.est.2024.114072

Zhiguo Wen , Chong Tian , Jing Ru , Xiang Wang

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Abstract

In the realm of energy storage and electrical insulation, this study illuminates the innovative fabrication and consequent properties of polyvinylidene fluoride (PVDF) and polyethylene glycol (PEG800) blend films, synthesized via the casting method. The essence of this research lies in the integration of PEG800 into the PVDF matrix, a strategic move that significantly bolsters the insulation capabilities of the resulting composite, underscored by a dramatic decrease in leakage current from 2.61E-7 A to 3.50E-9 A at an electric field of 50 MV/m. Notably, at an optimal PEG800 mass fraction of 30 %, the composite film unveils an extraordinary energy storage density of 34.6 J/cm³ under the formidable electric field of 650 MV/m. This study not only shows cases the superior energy storage and rapid charge-discharge characteristics, particularly with a discharge time (t_0.9) of 66 ns of the 70PVDF/30PEG800 film, but also underscores the potential of such blend films in revolutionizing the design and functionality of polymer film capacitors, marking a significant stride towards sustainable and efficient energy storage solutions.

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通过控制基于 PVDF 的聚合物电容器的绝缘性能增强其储能特性

在储能和电绝缘领域，本研究阐明了通过浇铸法合成的聚偏二氟乙烯（PVDF）和聚乙二醇（PEG800）混合薄膜的创新制造方法及其特性。这项研究的精髓在于将 PEG800 融合到聚偏二氟乙烯基体中，这一战略举措大大增强了所制复合材料的绝缘能力，在 50 MV/m 的电场条件下，泄漏电流从 2.61E-7 A 骤降至 3.50E-9A。值得注意的是，当 PEG800 的最佳质量分数为 30% 时，复合薄膜在 650 MV/m 的强大电场下可达到 34.6 J/cm3 的非凡储能密度。这项研究不仅展示了 70PVDF/30PEG800 薄膜卓越的能量存储和快速充放电特性，特别是在放电时间（t0.9）为 66 ns 的情况下，而且还强调了这种混合薄膜在革新聚合物薄膜电容器的设计和功能方面的潜力，标志着向可持续和高效的能量存储解决方案迈出了重要的一步。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Biomaterials Science & Engineering Materials Science-Biomaterials

CiteScore

10.30

自引率

3.40%

发文量

413

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