{"title":"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","authors":"Jinyue Qiu, Ling Weng, Xiaorui Zhang, Yu Su","doi":"10.1049/nde2.12031","DOIUrl":null,"url":null,"abstract":"<p>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-TiO<sub>2</sub>/PVDF monolayer film and PVDF/PPy-TiO<sub>2</sub>/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-TiO<sub>2</sub>.When the filling amount is 30 wt%, the energy storage density of PVDF/PPy-TiO<sub>2</sub>/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-TiO<sub>2</sub>/PVDF sandwich-structured composite films could be achieved to 2.68 J/cm<sup>3</sup> under the electric strength of 1700 kV/cm.</p>","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":"{\"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\":\"<p>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-TiO<sub>2</sub>/PVDF monolayer film and PVDF/PPy-TiO<sub>2</sub>/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-TiO<sub>2</sub>.When the filling amount is 30 wt%, the energy storage density of PVDF/PPy-TiO<sub>2</sub>/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-TiO<sub>2</sub>/PVDF sandwich-structured composite films could be achieved to 2.68 J/cm<sup>3</sup> under the electric strength of 1700 kV/cm.</p>\",\"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}","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}
Sandwich-structured PPy-TiO2/PVDF composite films with outstanding dielectric properties and energy density
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.
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