ZIF-8/PEI介电复合材料的制备及其高温储能性能

doi:10.19976/j.cnki.43-1448/TF.2026020

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摘要针对传统聚醚酰亚胺(polyetherimide, PEI)电介质在高温环境下储能性能衰减的问题,本文采用温和沉淀法制备形貌高度均一的沸石咪唑框架-8 (zeolitic imidazolate framework-8, ZIF-8),将其作为功能填料引入PEI基体,制备不同填料含量的ZIF-8/PEI介电复合材料,并通过扫描电子显微镜、阻抗分析仪、高温介电温谱仪、铁电分析仪研究其微观结构、介电性能和高温储能性能。结果表明：当w(ZIF-8)=2%时,复合材料的储能性能最佳,室温下的最大能量密度可达9.50 J/cm³,较纯PEI (6.05 J/cm³)提升57%;在150 ℃及能量效率>90%的严苛条件下,其能量密度仍能保持在3.44 J/cm³,远优于纯PEI的1.00 J/cm³,展现出优异的高温储能稳定性。该复合材料的性能优势源于ZIF-8的宽带隙构建电子迁移势垒,可有效抑制漏电流与空间电荷积累。

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	杨晨晨
	李晓娜
	王凡
	罗行
	张斗

关键词 ：介电复合材料, 金属有机框架, 聚醚酰亚胺, 储能性能, 电容器, 高温

Abstract：To address the issue of deteriorated energy storage performance in traditional polyetherimide (PEI) dielectrics under high-temperature conditions, this work prepared zeolitic imidazolate framework-8 (ZIF-8) with highly uniform morphology via a mild precipitation method. Dielectric composites with varying filler contents were fabricated by incorporating ZIF-8 as a functional filler into the PEI matrix. Scanning electron microscope, impedance analyzer, high-temperature dielectric spectrometer, and ferroelectric analyzer were employed to investigate the microstructure, dielectric properties, and high-temperature energy storage performance of ZIF-8/PEI dielectric composites. The results indicate that when w(ZIF-8)=2%, the composite exhibits optimal energy storage performance. The maximum energy density at room temperature reaches 9.50 J/cm³, representing a 57% improvement over pristine PEI (6.05 J/cm³). Under harsh conditions of 150 ℃ and an energy efficiency exceeding 90%, the composite maintains an energy density of 3.44 J/cm³, significantly outperforming the 1.00 J/cm³ of pristine PEI and demonstrating excellent high-temperature energy storage stability. The enhanced performance of the composite stems from the wide bandgap of ZIF-8, which builds electron migration barrier that effectively suppresses leakage current and inhibits space charge accumulation.

Key words： dielectric composite metal-organic framework PEI energy storage performance capacitor high temperature

收稿日期: 2026-02-10 出版日期: 2026-09-08

ZTFLH:

TB34

基金资助:国家自然科学基金资助项目(52172265)

通讯作者: 罗行,研究员,博士。电话：18390909636;E-mail: hangluo@csu.edu.cn

引用本文:

杨晨晨, 李晓娜, 王凡, 罗行, 张斗. ZIF-8/PEI介电复合材料的制备及其高温储能性能[J]. 粉末冶金材料科学与工程, 2026, 31(4): 342-354.
YANG Chenchen, LI Xiaona, WANG Fan, LUO Hang, ZHANG Dou. Fabrication and high-temperature energy storage performance of ZIF-8/PEI dielectric composites[J]. Materials Science and Engineering of Powder Metallurgy, 2026, 31(4): 342-354.

链接本文:

http://pmbjb.csu.edu.cn/CN/10.19976/j.cnki.43-1448/TF.2026020 或 http://pmbjb.csu.edu.cn/CN/Y2026/V31/I4/342

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