Na Zhang, Hang Zhao, Chuying Zhang, Shuyan Gao, Tongguang Zhu, Jinbo Bai
{"title":"取向碳nanotube@SiO 2纳米线调控聚偏氟乙烯基多层复合材料的储能性能","authors":"Na Zhang, Hang Zhao, Chuying Zhang, Shuyan Gao, Tongguang Zhu, Jinbo Bai","doi":"10.1049/nde2.12045","DOIUrl":null,"url":null,"abstract":"<p>High-performance dielectric capacitors are essential components of advanced electronic and pulsed power systems for energy storage. Because of their high breakdown strength and excellent flexibility, polymer-based capacitors are regarded as auspicious energy storage material. However, the energy storage capacity of polymer-based capacitors is severely limited due to their low polarisation and low dielectric permittivity. The modified Stöber method was used to construct two types of CNT@SiO<sub>2</sub> (CS) one-dimensional core-shell structured nanowires with different shell thicknesses. By integrating the procedures of solution mixing, melt blending, hot-stretching orientation and hot pressing, sandwich-structured poly (vinylidene fluoride) (PVDF)-based composites were fabricated. The CS core-shell nanowires dispersed in the inter-layer serve as electron donors, leading to a high permittivity, while two PVDF outer layers provide the favourable overall breakdown strength. The insulating SiO<sub>2</sub> shell can effectively limit the migration of carriers and keep the dielectric loss at a relatively low level in the composites. The CS/PVDF composite exhibited an enhanced discharged density (~6.1 J/cm<sup>3</sup>) and breakdown strength (~241 kV/mm) when the interlayer filled with as small as 1 wt% CS nanowires with the SiO<sub>2</sub> shell thickness of 8 nm, which is 203% and 18.7 % higher than pure PVDF (~2.01 J/cm<sup>3</sup> at 203 kV/mm), respectively. This research presents a practical strategy for designing and fabricating advanced polymer film capacitor energy storage devices.</p>","PeriodicalId":36855,"journal":{"name":"IET Nanodielectrics","volume":null,"pages":null},"PeriodicalIF":3.8000,"publicationDate":"2023-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/nde2.12045","citationCount":"2","resultStr":"{\"title\":\"Improved energy storage property in polyvinylidene fluoride-based multilayered composite regulated by oriented carbon nanotube@SiO2 nanowires\",\"authors\":\"Na Zhang, Hang Zhao, Chuying Zhang, Shuyan Gao, Tongguang Zhu, Jinbo Bai\",\"doi\":\"10.1049/nde2.12045\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>High-performance dielectric capacitors are essential components of advanced electronic and pulsed power systems for energy storage. Because of their high breakdown strength and excellent flexibility, polymer-based capacitors are regarded as auspicious energy storage material. However, the energy storage capacity of polymer-based capacitors is severely limited due to their low polarisation and low dielectric permittivity. The modified Stöber method was used to construct two types of CNT@SiO<sub>2</sub> (CS) one-dimensional core-shell structured nanowires with different shell thicknesses. By integrating the procedures of solution mixing, melt blending, hot-stretching orientation and hot pressing, sandwich-structured poly (vinylidene fluoride) (PVDF)-based composites were fabricated. The CS core-shell nanowires dispersed in the inter-layer serve as electron donors, leading to a high permittivity, while two PVDF outer layers provide the favourable overall breakdown strength. The insulating SiO<sub>2</sub> shell can effectively limit the migration of carriers and keep the dielectric loss at a relatively low level in the composites. The CS/PVDF composite exhibited an enhanced discharged density (~6.1 J/cm<sup>3</sup>) and breakdown strength (~241 kV/mm) when the interlayer filled with as small as 1 wt% CS nanowires with the SiO<sub>2</sub> shell thickness of 8 nm, which is 203% and 18.7 % higher than pure PVDF (~2.01 J/cm<sup>3</sup> at 203 kV/mm), respectively. This research presents a practical strategy for designing and fabricating advanced polymer film capacitor energy storage devices.</p>\",\"PeriodicalId\":36855,\"journal\":{\"name\":\"IET Nanodielectrics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.8000,\"publicationDate\":\"2023-03-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1049/nde2.12045\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IET Nanodielectrics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1049/nde2.12045\",\"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/nde2.12045","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
Improved energy storage property in polyvinylidene fluoride-based multilayered composite regulated by oriented carbon nanotube@SiO2 nanowires
High-performance dielectric capacitors are essential components of advanced electronic and pulsed power systems for energy storage. Because of their high breakdown strength and excellent flexibility, polymer-based capacitors are regarded as auspicious energy storage material. However, the energy storage capacity of polymer-based capacitors is severely limited due to their low polarisation and low dielectric permittivity. The modified Stöber method was used to construct two types of CNT@SiO2 (CS) one-dimensional core-shell structured nanowires with different shell thicknesses. By integrating the procedures of solution mixing, melt blending, hot-stretching orientation and hot pressing, sandwich-structured poly (vinylidene fluoride) (PVDF)-based composites were fabricated. The CS core-shell nanowires dispersed in the inter-layer serve as electron donors, leading to a high permittivity, while two PVDF outer layers provide the favourable overall breakdown strength. The insulating SiO2 shell can effectively limit the migration of carriers and keep the dielectric loss at a relatively low level in the composites. The CS/PVDF composite exhibited an enhanced discharged density (~6.1 J/cm3) and breakdown strength (~241 kV/mm) when the interlayer filled with as small as 1 wt% CS nanowires with the SiO2 shell thickness of 8 nm, which is 203% and 18.7 % higher than pure PVDF (~2.01 J/cm3 at 203 kV/mm), respectively. This research presents a practical strategy for designing and fabricating advanced polymer film capacitor energy storage devices.