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Significantly Enhanced Energy Density in Nanocomposite Capacitors Combining the TiO2 Nanorod Array with Poly(vinylidene fluoride)
Yao L.1; Pan Z.2; Liu S.2; Zhai J.2; Chen H.H.D.1
2016
Source PublicationACS Applied Materials and Interfaces
ISSN19448244
Volume8Issue:39Pages:26343
Abstract

A novel inorganic/polymer nanocomposite, using 1-dimensional TiO2 nanorod array as fillers (TNA) and poly(vinylidene fluoride) (PVDF) as matrix, has been successfully synthesized for the first time. A carefully designed process sequence includes several steps with the initial epitaxial growth of highly oriented TNA on the fluorine-doped tin oxide (FTO) conductive glass. Subsequently, PVDF is embedded into the nanorods by the spin-coating method followed by annealing and quenching processes. This novel structure with dispersive fillers demonstrates a successful compromise between the electric displacement and breakdown strength, resulting in a dramatic increase in the electric polarization which leads to a significant improvement on the energy density and discharge efficiency. The nanocomposites with various height ratios of fillers between the TNA and total film thickness were investigated by us. The results show that nanocomposite with 18% height ratio fillers obtains maximum increase in the energy density (10.62 J cm-3) at a lower applied electric field of 340 MV m-1, and it also illustrates a higher efficiency (>85%) under the electric field less than 100 MV m-1. Even when the electric field reached 340 MV m-1, the efficiency of nanocomposites can still maintained at ∼70%. This energy density exceeds most of the previously reported TiO2-based nanocomposite values at such a breakdown strength, which provides another promising design for the next generation of dielectric nanocomposite material, by using the highly oriented nanorod array as fillers for the higher energy density capacitors. Additionally, the finite element simulation has been employed to analyze the distribution of electric fields and electric flux density to explore the inherent mechanism of the higher performance of the TNA/PVDF nanocomposites. © 2016 American Chemical Society.

KeywordCapacitors Energy Density Nanocomposites Nanorod Arrays Poly(Vinylidene Fluoride) Titanium Oxides
DOI10.1021/acsami.6b09265
URLView the original
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000384951800082
The Source to ArticleScopus
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Cited Times [WOS]:48   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Affiliation1.Univ Macau, Inst Appl Phys & Mat Engn, Fac Sci & Technol, Taipa 999078, Macao, Peoples R China
2.Tongji Univ, Sch Mat Sci Engn, Key Lab Adv Civil Engn Mat, Funct Mat Res Lab,Minist Educ, 4800 Caoan Rd, Shanghai 201804, Peoples R China
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Yao L.,Pan Z.,Liu S.,et al. Significantly Enhanced Energy Density in Nanocomposite Capacitors Combining the TiO2 Nanorod Array with Poly(vinylidene fluoride)[J]. ACS Applied Materials and Interfaces,2016,8(39):26343.
APA Yao L.,Pan Z.,Liu S.,Zhai J.,&Chen H.H.D..(2016).Significantly Enhanced Energy Density in Nanocomposite Capacitors Combining the TiO2 Nanorod Array with Poly(vinylidene fluoride).ACS Applied Materials and Interfaces,8(39),26343.
MLA Yao L.,et al."Significantly Enhanced Energy Density in Nanocomposite Capacitors Combining the TiO2 Nanorod Array with Poly(vinylidene fluoride)".ACS Applied Materials and Interfaces 8.39(2016):26343.
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