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Application of Polymer Composite Materials in Flexible Capacitors

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Composites and Nanocomposites".

Deadline for manuscript submissions: closed (10 June 2022) | Viewed by 5629

Special Issue Editors

Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology , Harbin, 150080, China
Interests: polymer composites; energy storage performance; dielectric performance; thermal performance; breakdown simulations; machine learning; performance prediction/evaluation
State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an, 710049, China
Interests: polymer composites; dielectric performance; energy storage and conversion; breakdown modeling; macro-mesoscopic micro-multiscale research

Special Issue Information

Dear Colleagues,

 

Flexible capacitors are an important component of power pulse devices, hybrid electric vehicles, portable electronic devices, etc. With the development of flexible capacitors toward miniaturization and high performance, higher requirements are put forward for the comprehensive performance of polymers. Traditional polymer materials have encountered bottlenecks due to their electrical, thermal, and mechanical properties and have gradually been unable to meet actual demand. In recent years, polymer composite materials continue to fascinate researchers with their attractive composite structures and excellent comprehensive properties. Moreover, interdisciplinary research can further guide and understand the structural design and performance optimization of polymer composite materials.

 

This Special Issue of Polymers entitled “Application of Polymer Composite Materials in Flexible Capacitors” will attempt to cover recent developments in polymer composite materials of a wide range of topics, including materials structure design, structure–property relationships, molecular dynamics calculation, the building of comprehensive simulation models, machine learning strategies, performance prediction of dielectric and capacitors, etc. The above list is only indicative and by no means exhaustive, and any original work or review article on the role of polymer composite materials in flexible capacitors is welcome.

 

Dr. Yu Feng

Dr. Daomin Min

Guest Editors

Dr. Yu Feng
Dr. Daomin Min
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Polymers is an international peer-reviewed open access semimonthly journal published by MDPI.

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Keywords

  • Polymer composite materials
  • Dielectric capacitors
  • Dielectric, thermal, mechanical properties
  • Material structure design
  • Optimization mechanism
  • Molecular dynamics
  • Modeling and simulations
  • Machine learning
  • Performance prediction/evaluation

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Published Papers (2 papers)

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Research

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14 pages, 34125 KiB  
Article
Effect of Hydrophilic/Hydrophobic Nanostructured TiO2 on Space Charge and Breakdown Properties of Polypropylene
by Jun-Guo Gao, Hong-Shuo Liu, Ting-Tai Lee, Uwe Schachtely, Hitoshi Kobayashi and Li-Li Li
Polymers 2022, 14(14), 2762; https://doi.org/10.3390/polym14142762 - 6 Jul 2022
Cited by 9 | Viewed by 2593
Abstract
Polypropylene (PP) has received more and more attention in the field of insulating materials as a recyclable thermoplastic. To further enhance the applicability of polypropylene in the field of insulation, it needs to be modified to improve its electrical properties. In this paper, [...] Read more.
Polypropylene (PP) has received more and more attention in the field of insulating materials as a recyclable thermoplastic. To further enhance the applicability of polypropylene in the field of insulation, it needs to be modified to improve its electrical properties. In this paper, the impact mechanism of AEROXIDE® TiO2 P 90 (P90) and AEROXIDE® TiO2 NKT 90 (NKT90) as nanosized hydrophilic and hydrophobic fumed titania from Evonik on the electrical properties of PP was studied mainly through the crystallization behavior and space charge distribution of PP nanocomposites. Two kinds of nanostructured TiO2 were melt-blended with PP according to four types of contents. The results of alternating current (AC)/direct current (DC) breakdown field strength of the two materials were explained by studying the microstructure and space charge characteristics of the nanocomposites. Among them, hydrophilic nanostructured TiO2 are agglomerated when the content is low. The spherulite size of the nanocomposite is large, the space charge suppression ability is poor, the charge is easy to penetrate into the pattern, and the AC/DC breakdown field strength is significantly reduced. However, hydrophobic nanostructured TiO2 has better dispersion in PP, smaller spherulites, more regular arrangement, and less space charge accumulation. The charge penetration occurs only when the nanostructured material content is 2 wt%, and the AC/DC breakdown strength increases by 20.8% at the highest when the nanostructured material content is 1 wt%. It provides the possibility to prepare recyclable high-performance DC PP composite insulating materials. Full article
(This article belongs to the Special Issue Application of Polymer Composite Materials in Flexible Capacitors)
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Review

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39 pages, 117304 KiB  
Review
Energy Storage Application of All-Organic Polymer Dielectrics: A Review
by Zhijie Yang, Dong Yue, Yuanhang Yao, Jialong Li, Qingguo Chi, Qingguo Chen, Daomin Min and Yu Feng
Polymers 2022, 14(6), 1160; https://doi.org/10.3390/polym14061160 - 14 Mar 2022
Cited by 55 | Viewed by 7184
Abstract
With the wide application of energy storage equipment in modern electronic and electrical systems, developing polymer-based dielectric capacitors with high-power density and rapid charge and discharge capabilities has become important. However, there are significant challenges in synergistic optimization of conventional polymer-based composites, specifically [...] Read more.
With the wide application of energy storage equipment in modern electronic and electrical systems, developing polymer-based dielectric capacitors with high-power density and rapid charge and discharge capabilities has become important. However, there are significant challenges in synergistic optimization of conventional polymer-based composites, specifically in terms of their breakdown and dielectric properties. As the basis of dielectrics, all-organic polymers have become a research hotspot in recent years, showing broad development prospects in the fields of dielectric and energy storage. This paper reviews the research progress of all-organic polymer dielectrics from the perspective of material preparation methods, with emphasis on strategies that enhance both dielectric and energy storage performance. By dividing all-organic polymer dielectrics into linear polymer dielectrics and nonlinear polymer dielectrics, the paper describes the effects of three structures (blending, filling, and multilayer) on the dielectric and energy storage properties of all-organic polymer dielectrics. Based on the above research progress, the energy storage applications of all-organic dielectrics are summarized and their prospects discussed. Full article
(This article belongs to the Special Issue Application of Polymer Composite Materials in Flexible Capacitors)
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