Journal Home > Volume 10 , issue 2

The dielectric capacitor has been widely used in advanced electronic and electrical power systems due to its capability of ultrafast charging-discharging and ultrahigh power density. Nevertheless, its energy density is still limited by the low dielectric constant (≈ 2.2) of the commercial dielectric polypropylene (PP). The conventional enhancement strategy by embedding inorganic fillers in PP matrix is still difficult and challenging due to that PP hardly dissolves in any inorganic/organic solvent. In this work, we develop a new strategy including freeze-drying, surface functionalization, and hot-pressing to incorporate Ti0.87O2 monolayers in PP film. A series of uniform composited Ti0.87O2@PP film has been successfully fabricated with Ti0.87O2 content range of 0-15 wt%. The maximum dielectric constant of the as-prepared Ti0.87O2@PP film is 3.27 when the Ti0.87O2 content is 9 wt%, which is about 1.5 times higher than that of pure PP. Our study provides a feasible strategy to embed two-dimensional material into commercial PP thin-film with superior dielectric performance for practical application.


menu
Abstract
Full text
Outline
About this article

Freeze-drying and hot-pressing strategy to embed two-dimensional Ti0.87O2 monolayers in commercial polypropylene films with enhanced dielectric properties

Show Author's information Wenchao TIANaFei YANcCailing CAIaZeyi WUaChenchen ZHANGbTing YINcSijia LAOcLinfeng HUa( )
Department of Materials Science, Fudan University, Shanghai 200433, China
State Grid Anhui Electric Power Institute, Hefei 230022, China
China Electric Power Research Institute, Beijing 100192, China

Abstract

The dielectric capacitor has been widely used in advanced electronic and electrical power systems due to its capability of ultrafast charging-discharging and ultrahigh power density. Nevertheless, its energy density is still limited by the low dielectric constant (≈ 2.2) of the commercial dielectric polypropylene (PP). The conventional enhancement strategy by embedding inorganic fillers in PP matrix is still difficult and challenging due to that PP hardly dissolves in any inorganic/organic solvent. In this work, we develop a new strategy including freeze-drying, surface functionalization, and hot-pressing to incorporate Ti0.87O2 monolayers in PP film. A series of uniform composited Ti0.87O2@PP film has been successfully fabricated with Ti0.87O2 content range of 0-15 wt%. The maximum dielectric constant of the as-prepared Ti0.87O2@PP film is 3.27 when the Ti0.87O2 content is 9 wt%, which is about 1.5 times higher than that of pure PP. Our study provides a feasible strategy to embed two-dimensional material into commercial PP thin-film with superior dielectric performance for practical application.

Keywords:

Ti0.87O2 nanosheets, polypropylene (PP), freeze-drying, surface functionalization, hot-pressing, dielectric constant
Received: 13 August 2020 Revised: 03 December 2020 Accepted: 05 December 2020 Published: 05 February 2021 Issue date: April 2021
References(22)
[1]
Q Li, L Chen, MR Gadinski, et al. Flexible high-temperature dielectric materials from polymer nanocomposites. Nature 2015, 523: 576-579.
[2]
ZH Yao, Z Song, H Hao, et al. Homogeneous/inhomogeneous-structured dielectrics and their energy-storage performances. Adv Mater 2017, 29: 1601727.
[3]
ZM Dang, JK Yuan, JW Zha, et al. Fundamentals, processes and applications of high-permittivity polymer-matrix composites. Prog Mater Sci 2012, 57: 660-723.
[4]
SB Luo, JY Yu, SH Yu, et al. Significantly enhanced electrostatic energy storage performance of flexible polymer composites by introducing highly insulating-ferroelectric microhybrids as fillers. Adv Energy Mater 2019, 9: 1803204.
[5]
ZB Pan, LM Yao, JW Zhai, et al. Interfacial coupling effect in organic/inorganic nanocomposites with high energy density. Adv Mater 2018, 30: 1705662.
[6]
YL Qiao, XD Yin, T Zhu, et al. Dielectric polymers with novel chemistry, compositions and architectures. Prog Polym Sci 2018, 80: 153-162.
[7]
Y Zhang, CH Zhang, Y Feng, et al. Excellent energy storage performance and thermal property of polymer-based composite induced by multifunctional one-dimensional nanofibers oriented in-plane direction. Nano Energy 2019, 56: 138-150.
[8]
H Luo, XF Zhou, C Ellingford, et al. Interface design for high energy density polymer nanocomposites. Chem Soc Rev 2019, 48: 4424-4465.
[9]
MS Zheng, JW Zha, Y Yang, et al. Polyurethane induced high breakdown strength and high energy storage density in polyurethane/poly(vinylidene fluoride) composite films. Appl Phys Lett 2017, 110: 252902.
[10]
M Osada, Y Ebina, H Funakubo, et al. High-κ dielectric nanofilms fabricated from titania nanosheets. Adv Mater 2006, 18: 1023-1027.
[11]
M Osada, T Sasaki. Two-dimensional dielectric nanosheets: Novel nanoelectronics from nanocrystal building blocks. Adv Mater 2012, 24: 210-228.
[12]
RM Wen, JM Guo, CL Zhao, et al. Nanocomposite capacitors with significantly enhanced energy density and breakdown strength utilizing a small loading of monolayer titania. Adv Mater Interfaces 2018, 5: 1701088.
[13]
ZW Bao, CM Hou, ZH Shen, et al. Negatively charged nanosheets significantly enhance the energy-storage capability of polymer-based nanocomposites. Adv Mater 2020, 32: 1907227.
[14]
LY Yang, J Ho, E Allahyarov, et al. Semicrystalline structure-dielectric property relationship and electrical conduction in a biaxially oriented poly(vinylidene fluoride) film under high electric fields and high temperatures. ACS Appl Mater Interfaces 2015, 7: 19894-19905.
[15]
TD Huan, S Boggs, G Teyssedre, et al. Advanced polymeric dielectrics for high energy density applications. Prog Mater Sci 2016, 83: 236-269.
[16]
R Dai, AQ Zhang, ZC Pan, et al. Epitaxial growth of lattice-mismatched core-shell TiO2@MoS2 for enhanced lithium-ion storage. Small 2016, 12: 2792-2799.
[17]
YW Dai, WZ Bao, LF Hu, et al. Forming free and ultralow-power erase operation in atomically crystal TiO2 resistive switching. 2D Mater 2017, 4: 025012.
[18]
P Han, ZJ Wang, M Kuang, et al. 2D assembly of confined space toward enhanced CO2 electroreduction. Adv Energy Mater 2018, 8: 1801230.
[19]
T Sasaki, F Kooli, M Iida, et al. A mixed alkali metal titanate with the lepidocrocite-like layered structure. preparation, crystal structure, protonic form, and acid-base intercalation properties. Chem Mater 1998, 10: 4123-4128.
[20]
T Sasaki, S Nakano, S Yamauchi, et al. Fabrication of titanium dioxide thin flakes and their porous aggregate. Chem Mater 1997, 9: 602-608.
[21]
IN Hidayah, M Mariatti, H Ismail, et al. Evaluation of PP/EPDM nanocomposites filled with SiO2, TiO2 and ZnO nanofillers as thermoplastic elastomeric insulators. Plast Rubber Compos 2015, 44: 259-264.
[22]
ZM Dang, JK Yuan, SH Yao, et al. Flexible nanodielectric materials with high permittivity for power energy storage. Adv Mater 2013, 25: 6334-6365.
Publication history
Copyright
Acknowledgements
Rights and permissions

Publication history

Received: 13 August 2020
Revised: 03 December 2020
Accepted: 05 December 2020
Published: 05 February 2021
Issue date: April 2021

Copyright

© The Author(s) 2020

Acknowledgements

This work was financially supported by the Researching Program of State Grid Corporation of China (GYW17201800011): Research and Application of Key Technologies to Improve the Performance of Film Insulator for High Voltage Capacitive Equipment.

Rights and permissions

This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.

The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.

To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

Reprints and Permission requests may be sought directly from editorial office.

Return