a.Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Guangdong Engineering Technology Research Centre for High Performance Organic and Polymer Photoelectric Functional Films, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
b.School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
c.Guangdong Provincial Laboratory of Chemistry and Fine Chemical Industry Jieyang Centre, Jieyang 515200, China
d.Chemistry and Chemical Engineering Guangdong Laboratory, Shantou 515031, China
mazt@gdut.edu.cn (Z.T.M.)
zhongshilong@gdut.edu.cn (S.L.Z.)
chenxd@gdut.edu.cn (X.D.C.)
纸质出版日期:2024-08-01,
网络出版日期:2024-05-17,
收稿日期:2024-01-21,
修回日期:2024-03-11,
录用日期:2024-03-26
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Zhou, B. Y.; Ma, Z. T.; Zhong, S. L.; Huang, Z. J.; Guo, Q.; Feng, D. C.; Yuan, Z. K.; Lu, S. L.; Yang, Y. Z.; Wang, C.; Yu, D. S.; Chen, X. D. Side-chain-type polyimide-Cu complexes with suppressed activation energy of relaxation for advanced high-temperature capacitor. Chinese J. Polym. Sci. 2024, 42, 1038–1048
Bai-Yang Zhou, Ze-Tong Ma, Shi-Long Zhong, et al. Side-Chain-Type Polyimide-Cu Complexes with Suppressed Activation Energy of Relaxation for Advanced High-Temperature Capacitor[J]. Chinese Journal of Polymer Science, 2024,42(8):1038-1048.
Zhou, B. Y.; Ma, Z. T.; Zhong, S. L.; Huang, Z. J.; Guo, Q.; Feng, D. C.; Yuan, Z. K.; Lu, S. L.; Yang, Y. Z.; Wang, C.; Yu, D. S.; Chen, X. D. Side-chain-type polyimide-Cu complexes with suppressed activation energy of relaxation for advanced high-temperature capacitor. Chinese J. Polym. Sci. 2024, 42, 1038–1048 DOI: 10.1007/s10118-024-3131-7.
Bai-Yang Zhou, Ze-Tong Ma, Shi-Long Zhong, et al. Side-Chain-Type Polyimide-Cu Complexes with Suppressed Activation Energy of Relaxation for Advanced High-Temperature Capacitor[J]. Chinese Journal of Polymer Science, 2024,42(8):1038-1048. DOI: 10.1007/s10118-024-3131-7.
A novel polyimide-Cu complex material predicated on side-chain-type pyridine-Cu coordination achieves superior dielectric performance
which endows an elevated degree of freedom with suppressed relaxation activation energy and long-range electron delocalization
enhancing molecular dipole moment with more flexibility.
The burgeoning growth of the new energy vehicles and aviation industry has escalated the need for energy storage capacitors capable of stable operation in harsh environments. The advent of metal-polyimide complexes has illuminated a novel approach for preparing temperature-resistant capacitors. However
the general application of these metal-polyimide complexes is impeded by the high dielectric loss and low breakdown strength
consequences of main-chain coordination and excessive metal ions content. Herein
our study proposes a novel polyimide-Cu complex material (POP-Cu) predicated on side-chain-type pyridine-Cu coordination
utilizing the structural backbone PMDA-ODA of mature commercial PI (Kapton) with reliable performance. Owing to the high degree of freedom afforded by the side chain with suppressed relaxation activation energy and the long-range electron delocalization formed by
d
-
π
coordination
the dielectric constant of this material containing merely 2.7 mol
% Cu increases from 3.25 (POPI) to 5.58
while maintaining a remarkably low dielectric loss of 0.0066. Meanwhile
this material exhibits a substantial DC breakdown strength of 436.2 MV·m
−1
and a high energy density of 5.42 J·cm
−3
coupled with superior mechanical and thermal properties. Even at 150 °C
it retains over 90% of its room-temperature energy density
demonstrating notable dielectric stability under high temperatures. These attributes underscore its promising application for capacitors operating in harsh environments.
Dielectric performancePolyimide complexesSide-Chain-TypeHigh-temperature capacitor
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