Sandwich-structured PPy-TiO2/PVDF composite films with outstanding dielectric properties and energy density

IF 3.8 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IET Nanodielectrics Pub Date : 2022-04-01 DOI:10.1049/nde2.12031

Jinyue Qiu, Ling Weng, Xiaorui Zhang, Yu Su

{"title":"Sandwich-structured PPy-TiO2/PVDF composite films with outstanding dielectric properties and energy density","authors":"Jinyue Qiu, Ling Weng, Xiaorui Zhang, Yu Su","doi":"10.1049/nde2.12031","DOIUrl":null,"url":null,"abstract":"Improving the energy storage density of dielectric capacitors has absorbed extensive attention for energy storage. However, a decrease in breakdown strength may be aroused after the addition of abundant fillers, it is necessary to design the composite film with a sandwich structure without the sacrifice of mechanical properties. The PPy-TiO2/PVDF monolayer film and PVDF/PPy-TiO2/PVDF sandwich-structured composite films were successfully prepared via electrospinning and a hot-press treatment. The experiment results show that the dielectric constant of the composite films can be enhanced effectively by adding PPy-TiO2.When the filling amount is 30 wt%, the energy storage density of PVDF/PPy-TiO2/PVDF sandwich-structured composite films is outstanding before the breakdown strength, which is higher than that of the pure PVDF film. The energy storage density of PVDF/PPy-TiO2/PVDF sandwich-structured composite films could be achieved to 2.68 J/cm3 under the electric strength of 1700 kV/cm.","PeriodicalId":36855,"journal":{"name":"IET Nanodielectrics","volume":null,"pages":null},"PeriodicalIF":3.8000,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/nde2.12031","citationCount":"8","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IET Nanodielectrics","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1049/nde2.12031","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}

引用次数: 8

Abstract

Improving the energy storage density of dielectric capacitors has absorbed extensive attention for energy storage. However, a decrease in breakdown strength may be aroused after the addition of abundant fillers, it is necessary to design the composite film with a sandwich structure without the sacrifice of mechanical properties. The PPy-TiO₂/PVDF monolayer film and PVDF/PPy-TiO₂/PVDF sandwich-structured composite films were successfully prepared via electrospinning and a hot-press treatment. The experiment results show that the dielectric constant of the composite films can be enhanced effectively by adding PPy-TiO₂.When the filling amount is 30 wt%, the energy storage density of PVDF/PPy-TiO₂/PVDF sandwich-structured composite films is outstanding before the breakdown strength, which is higher than that of the pure PVDF film. The energy storage density of PVDF/PPy-TiO₂/PVDF sandwich-structured composite films could be achieved to 2.68 J/cm³ under the electric strength of 1700 kV/cm.

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

具有优异介电性能和能量密度的夹层结构PPy - tio2 /PVDF复合薄膜

提高介质电容器的储能密度已引起储能领域的广泛关注。然而，大量填料的加入会引起击穿强度的降低，因此有必要在不牺牲力学性能的前提下设计夹层结构的复合膜。通过静电纺丝和热压处理，成功制备了PPy-TiO2/PVDF单层膜和PVDF/PPy-TiO2/PVDF三明治结构复合膜。实验结果表明，添加py - tio2可以有效地提高复合膜的介电常数。当填充量为30 wt%时，PVDF/ py - tio2 /PVDF三明治结构复合膜在击穿强度前的储能密度突出，高于纯PVDF膜。在1700 kV/cm的电强度下，PVDF/ py - tio2 /PVDF三明治结构复合薄膜的储能密度可达到2.68 J/cm3。

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分钟内获得全文去求助

来源期刊