Enhanced dielectric properties and breakdown strength of polymer/carbon nanotube composites by coating an SrTiO3 layer

In this work, strontium titanate (STO) was coated on the surface of carbon nanotubes (MWCNTs) through a sol–gel method to form a core–shell structure hybrid powder (STO@MWCNTs). This powder was then added to polydimethylsiloxane to prepare a flexible high-K composite. As coating, STO effectively pre...

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Autores principales:	Han Ruolin, Liu Yuping, Shi Jinchao, Chen Guang-Xin, Li Qifang
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	carbon nanotubes strontium titanate sol–gel method composites Polymers and polymer manufacture TP1080-1185
Acceso en línea:	https://doaj.org/article/2d5f0827c64d4c919d91c8d375235e39
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spelling	oai:doaj.org-article:2d5f0827c64d4c919d91c8d375235e392021-12-05T14:10:47ZEnhanced dielectric properties and breakdown strength of polymer/carbon nanotube composites by coating an SrTiO3 layer1618-722910.1515/epoly-2021-0028https://doaj.org/article/2d5f0827c64d4c919d91c8d375235e392021-04-01T00:00:00Zhttps://doi.org/10.1515/epoly-2021-0028https://doaj.org/toc/1618-7229In this work, strontium titanate (STO) was coated on the surface of carbon nanotubes (MWCNTs) through a sol–gel method to form a core–shell structure hybrid powder (STO@MWCNTs). This powder was then added to polydimethylsiloxane to prepare a flexible high-K composite. As coating, STO effectively prevents the overlap and agglomeration of MWCNTs, thereby passivating the percolation threshold of the composite. STO increases the dielectric properties of the composite as a high dielectric ceramic. Under a low filler loading amount of 11 wt%, the dielectric constant and dielectric loss of the composite are 53 and 0.1, respectively. In addition, the composite can still maintain superior breakdown strength and mechanical properties, given the relatively low filler concentration. The enhanced dielectric properties, breakdown strength, and tensile strength make the composite suitable for application as dielectric material in flexible and stretchable energy storage equipment.Han RuolinLiu YupingShi JinchaoChen Guang-XinLi QifangDe Gruyterarticlecarbon nanotubesstrontium titanatesol–gel methodcompositesPolymers and polymer manufactureTP1080-1185ENe-Polymers, Vol 21, Iss 1, Pp 272-278 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	carbon nanotubes strontium titanate sol–gel method composites Polymers and polymer manufacture TP1080-1185
spellingShingle	carbon nanotubes strontium titanate sol–gel method composites Polymers and polymer manufacture TP1080-1185 Han Ruolin Liu Yuping Shi Jinchao Chen Guang-Xin Li Qifang Enhanced dielectric properties and breakdown strength of polymer/carbon nanotube composites by coating an SrTiO3 layer
description	In this work, strontium titanate (STO) was coated on the surface of carbon nanotubes (MWCNTs) through a sol–gel method to form a core–shell structure hybrid powder (STO@MWCNTs). This powder was then added to polydimethylsiloxane to prepare a flexible high-K composite. As coating, STO effectively prevents the overlap and agglomeration of MWCNTs, thereby passivating the percolation threshold of the composite. STO increases the dielectric properties of the composite as a high dielectric ceramic. Under a low filler loading amount of 11 wt%, the dielectric constant and dielectric loss of the composite are 53 and 0.1, respectively. In addition, the composite can still maintain superior breakdown strength and mechanical properties, given the relatively low filler concentration. The enhanced dielectric properties, breakdown strength, and tensile strength make the composite suitable for application as dielectric material in flexible and stretchable energy storage equipment.
format	article
author	Han Ruolin Liu Yuping Shi Jinchao Chen Guang-Xin Li Qifang
author_facet	Han Ruolin Liu Yuping Shi Jinchao Chen Guang-Xin Li Qifang
author_sort	Han Ruolin
title	Enhanced dielectric properties and breakdown strength of polymer/carbon nanotube composites by coating an SrTiO3 layer
title_short	Enhanced dielectric properties and breakdown strength of polymer/carbon nanotube composites by coating an SrTiO3 layer
title_full	Enhanced dielectric properties and breakdown strength of polymer/carbon nanotube composites by coating an SrTiO3 layer
title_fullStr	Enhanced dielectric properties and breakdown strength of polymer/carbon nanotube composites by coating an SrTiO3 layer
title_full_unstemmed	Enhanced dielectric properties and breakdown strength of polymer/carbon nanotube composites by coating an SrTiO3 layer
title_sort	enhanced dielectric properties and breakdown strength of polymer/carbon nanotube composites by coating an srtio3 layer
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/2d5f0827c64d4c919d91c8d375235e39
work_keys_str_mv	AT hanruolin enhanceddielectricpropertiesandbreakdownstrengthofpolymercarbonnanotubecompositesbycoatingansrtio3layer AT liuyuping enhanceddielectricpropertiesandbreakdownstrengthofpolymercarbonnanotubecompositesbycoatingansrtio3layer AT shijinchao enhanceddielectricpropertiesandbreakdownstrengthofpolymercarbonnanotubecompositesbycoatingansrtio3layer AT chenguangxin enhanceddielectricpropertiesandbreakdownstrengthofpolymercarbonnanotubecompositesbycoatingansrtio3layer AT liqifang enhanceddielectricpropertiesandbreakdownstrengthofpolymercarbonnanotubecompositesbycoatingansrtio3layer
_version_	1718371711341035520

Enhanced dielectric properties and breakdown strength of polymer/carbon nanotube composites by coating an SrTiO3 layer

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