Relationship between the molecular structure of polyimide and its dielectric properties: Optimizing performance for triboelectric nanogenerators

IF 4.1 2区 化学 Q2 POLYMER SCIENCE
Songhao Mo , Hong Ruan , Yuqi Li
{"title":"Relationship between the molecular structure of polyimide and its dielectric properties: Optimizing performance for triboelectric nanogenerators","authors":"Songhao Mo ,&nbsp;Hong Ruan ,&nbsp;Yuqi Li","doi":"10.1016/j.polymer.2024.127868","DOIUrl":null,"url":null,"abstract":"<div><div>Triboelectric nanogenerators (TENGs) are eco-friendly energy harvesters. Polyimide (PI) has been widely used as a triboelectric layer in TENGs, but the relationship between its structure and performance is not fully understood. Herein, PI films with varying molecular structures were prepared to investigate the effects of -O- and –CF<sub>3</sub> groups on their physical properties and triboelectric performance. The results showed that PI films with -O- exhibited better thermal stability, while both -O- and –CF<sub>3</sub> groups effectively modulated optical transparency and dielectric properties. At 450 nm, M6-PI and O6-PI exhibited the highest transmittance at 63.14 % and 55.06 %, respectively, with dielectric loss performance below 0.5 % at 10<sup>5</sup> Hz. PI films incorporating -O- and –CF<sub>3</sub> demonstrated significant improvements in triboelectric performance. Theoretical calculations clarified these groups influence optical transparency, dielectric properties, and electrical output performance. Ultimately, the fabricated 6PI-TENG achieved the desired triboelectric performance with enhanced electrical output. The V<sub>oc</sub> and Q<sub>sc</sub> of 6PI reached approximately 80 V and 25 nC, respectively. This study offers essential theoretical insights for designing and advancing of TENGs, contributing to sustainable energy development.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"316 ","pages":"Article 127868"},"PeriodicalIF":4.1000,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polymer","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0032386124012047","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
引用次数: 0

Abstract

Triboelectric nanogenerators (TENGs) are eco-friendly energy harvesters. Polyimide (PI) has been widely used as a triboelectric layer in TENGs, but the relationship between its structure and performance is not fully understood. Herein, PI films with varying molecular structures were prepared to investigate the effects of -O- and –CF3 groups on their physical properties and triboelectric performance. The results showed that PI films with -O- exhibited better thermal stability, while both -O- and –CF3 groups effectively modulated optical transparency and dielectric properties. At 450 nm, M6-PI and O6-PI exhibited the highest transmittance at 63.14 % and 55.06 %, respectively, with dielectric loss performance below 0.5 % at 105 Hz. PI films incorporating -O- and –CF3 demonstrated significant improvements in triboelectric performance. Theoretical calculations clarified these groups influence optical transparency, dielectric properties, and electrical output performance. Ultimately, the fabricated 6PI-TENG achieved the desired triboelectric performance with enhanced electrical output. The Voc and Qsc of 6PI reached approximately 80 V and 25 nC, respectively. This study offers essential theoretical insights for designing and advancing of TENGs, contributing to sustainable energy development.

Abstract Image

Abstract Image

聚酰亚胺分子结构与其介电性能之间的关系:优化三电纳米发电机的性能
三电纳米发电机(TENGs)是一种生态友好型能量收集器。聚酰亚胺(PI)已被广泛用作 TENG 的三电层,但其结构与性能之间的关系尚未完全明了。本文制备了不同分子结构的聚酰亚胺薄膜,研究了-O-和-CF3基团对其物理性质和三电性能的影响。结果表明,带有 -O- 的 PI 薄膜具有更好的热稳定性,而 -O- 和 -CF3 基团则能有效调节光学透明度和介电性能。在 450 纳米波长下,M6-PI 和 O6-PI 的透光率最高,分别为 63.14% 和 55.06%,在 105 Hz 频率下的介电损耗性能低于 0.5%。含有 -O- 和 -CF3 的 PI 薄膜在三电性能方面有显著改善。理论计算阐明了这些基团对光学透明度、介电性能和电输出性能的影响。最终,制造出的 6PI-TENG 实现了理想的三电性能,并增强了电输出。6PI 的 Voc 和 Qsc 分别达到了约 80 V 和 25 nC。这项研究为设计和推进 TENG 提供了重要的理论启示,有助于可持续能源发展。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Polymer
Polymer 化学-高分子科学
CiteScore
7.90
自引率
8.70%
发文量
959
审稿时长
32 days
期刊介绍: Polymer is an interdisciplinary journal dedicated to publishing innovative and significant advances in Polymer Physics, Chemistry and Technology. We welcome submissions on polymer hybrids, nanocomposites, characterisation and self-assembly. Polymer also publishes work on the technological application of polymers in energy and optoelectronics. The main scope is covered but not limited to the following core areas: Polymer Materials Nanocomposites and hybrid nanomaterials Polymer blends, films, fibres, networks and porous materials Physical Characterization Characterisation, modelling and simulation* of molecular and materials properties in bulk, solution, and thin films Polymer Engineering Advanced multiscale processing methods Polymer Synthesis, Modification and Self-assembly Including designer polymer architectures, mechanisms and kinetics, and supramolecular polymerization Technological Applications Polymers for energy generation and storage Polymer membranes for separation technology Polymers for opto- and microelectronics.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信