Construction of a 3D-BaTiO3 network leading to significantly enhanced dielectric permittivity and energy storage density of polymer composites

2017 ◽  
Vol 10 (1) ◽  
pp. 137-144 ◽  
Author(s):  
Suibin Luo ◽  
Yanbin Shen ◽  
Shuhui Yu ◽  
Yanjun Wan ◽  
Wei-Hsin Liao ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Dielectric Permittivity ◽  
Polymer Composites ◽  
Polymer Matrix ◽  
Energy Storage Density ◽  
Storage Density ◽  
Discharged Energy Density

The 3D-connected BaTiO3 network introduced into the polymer matrix improves polarization transmission and results in significantly enhanced permittivity and discharged energy density.

Highly enhanced dielectric strength and energy storage density in hydantoin@BaTiO3–P(VDF-HFP) composites with a sandwich-structure

RSC Advances ◽  
2015 ◽  
Vol 5 (65) ◽  
pp. 52809-52816 ◽  
Author(s):  
Hang Luo ◽  
Dou Zhang ◽  
Lu Wang ◽  
Chao Chen ◽  
Jing Zhou ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Sandwich Structure ◽  
Dielectric Strength ◽  
Energy Storage Density ◽  
Storage Density ◽  
Discharged Energy Density

The dielectric strength and discharged energy density are largely enhanced in the sandwich-structured hydantoin@BaTiO3–P(VDF-HFP) composites.

Synergistically ultrahigh energy storage density and efficiency in designed sandwich-structured poly(vinylidene fluoride)-based flexible composite films induced by doping Na0.5Bi0.5TiO3 whiskers

2020 ◽  
Vol 8 (44) ◽  
pp. 23427-23435
Author(s):  
Ying Lin ◽  
Yongjing Zhang ◽  
Shili Zhan ◽  
Chuang Sun ◽  
Guangliang Hu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Vinylidene Fluoride ◽  
Composite Films ◽  
Energy Storage Density ◽  
Ultrahigh Energy ◽  
Storage Density ◽  
Poly Vinylidene Fluoride ◽  
Discharged Energy Density

Newly designed sandwich-structured poly(vinylidene fluoride)-based composite films with Na0.5Bi0.5TiO3 whiskers give rise to ultrahigh discharged energy density and efficiency.

Enhanced dielectric performance and energy storage density of polymer/graphene nanocomposites prepared by dual fabrication

2018 ◽  
Vol 33 (2) ◽  
pp. 270-285 ◽  
Author(s):  
UO Uyor ◽  
API Popoola ◽  
OM Popoola ◽  
VS Aigbodion
Keyword(s):  
Energy Storage ◽  
Polymer Matrix ◽  
Vinylidene Fluoride ◽  
Energy Storage Materials ◽  
Energy Storage Density ◽  
Melt Mixing ◽  
Graphene Nanocomposites ◽  
Storage Density ◽  
Solution Blending ◽  
Dielectric Performance

Polymer/graphene nanocomposites (PGNs) have shown great potential as dielectric and energy storage materials. However, insolubility of graphene in most solvents, hydrophobic behaviour and poor dispersion in polymer matrix restrict wider fabrications and applications of PGNs. In this study, we present co-fabricated PGNs engineered by solution blending and melt compounding methods with improved dielectric performance. Further processing of PGNs by melt mixing after solution blending not only improved dispersion of graphene in the matrix but also ensured good interfacial interaction of the composites’ constituents and reduction of oxygen content in PGNs. Graphene nanoplatelets used in this study was slightly functionalized (fGNPs) to enhance dispersion in the polymer matrix. It was later characterized using Fourier transform infrared (FTIR) and Raman spectrometer. Scanning electron microscope (SEM) was used in morphological study of the fabricated composites. Dielectric properties, electrical conductivity, breakdown strength and energy storage capacity of the fabricated composites were investigated. The results obtained showed well-dispersed fGNPs in poly (vinylidene fluoride) (PVDF) matrix and improved dielectric performance. For instance, with 3.34 wt% and 6.67 wt% fGNPs co-fabricated composites, dielectric constant increased from about 9 for neat PVDF to 9930 and 38,418 at 100 Hz, respectively. While 7588 and 12,046 were respectively measured for solution blended-only composites at similar fGNPs content. These resulted to about 176.9% and 376.4% increase in energy storage density with 3.34 wt% and 6.67 wt% fGNPs co-fabricated composites when compared to their counterparts. These results were also credited to strong bonding, reduction of oxygen and recovered graphene structure by melt-mixing approach.

Greatly enhanced discharge energy density and efficiency of novel relaxation ferroelectric BNT–BKT-based ceramics

2020 ◽  
Vol 8 (2) ◽  
pp. 591-601 ◽  
Author(s):  
Di Hu ◽  
Zhongbin Pan ◽  
Xiang Zhang ◽  
Haoran Ye ◽  
Zhouyang He ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
High Efficiency ◽  
Energy Storage Density ◽  
Discharge Energy ◽  
Storage Density ◽  
Recoverable Energy ◽  
Discharge Energy Density

The 0.65(NBT-BKT)–0.35SBT ceramic possesses an ultra-high recoverable energy storage density (Wrec ∼ 4.06 J cm−3) and maintains a relatively high efficiency (η = ∼87.3%).

scholarly journals Significantly Enhanced Energy Storage Density by Modulating the Aspect Ratio of BaTiO3 Nanofibers

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Dou Zhang ◽  
Xuefan Zhou ◽  
James Roscow ◽  
Kechao Zhou ◽  
Lu Wang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Aspect Ratio ◽  
Volume Fraction ◽  
Breakdown Strength ◽  
Electric Displacement ◽  
High Energy ◽  
High Energy Density ◽  
Energy Storage Density ◽  
Storage Density

Abstract There is a growing need for high energy density capacitors in modern electric power supplies. The creation of nanocomposite systems based on one-dimensional nanofibers has shown great potential in achieving a high energy density since they can optimize the energy density by exploiting both the high permittivity of ceramic fillers and the high breakdown strength of the polymer matrix. In this paper, BaTiO3 nanofibers (NFs) with different aspect ratio were synthesized by a two-step hydrothermal method and the permittivity and energy storage of the P(VDF-HFP) nanocomposites were investigated. It is found that as the BaTiO3 NF aspect ratio and volume fraction increased the permittivity and maximum electric displacement of the nanocomposites increased, while the breakdown strength decreased. The nanocomposites with the highest aspect ratio BaTiO3 NFs exhibited the highest energy storage density at the same electric field. However, the nanocomposites with the lowest aspect ratio BaTiO3 NFs achieved the maximal energy storage density of 15.48 J/cm3 due to its higher breakdown strength. This contribution provides a potential route to prepare and tailor the properties of high energy density capacitor nanocomposites.

scholarly journals Low-Cost High Energy Density Material for Solar Thermal Heat Storage

2020 ◽  
Vol 3 (2) ◽  
pp. 46-56
Author(s):  
Rebhi Damseh
Keyword(s):  
Thermal Conductivity ◽  
Energy Storage ◽  
Energy Density ◽  
Heat Storage ◽  
Low Cost ◽  
High Energy ◽  
Solar Thermal ◽  
Energy Storage Density ◽  
Solar Thermal Energy ◽  
Storage Density

A low-cost and enhanced thermal properties composite material for sensible heat storage in solar thermal energy storage applications is introduced. The proposed material is produced primarily for small scale solar thermal applications. However, it can be utilized for large scale solar thermal plants. The material has the advantages of high thermal conductivity and large energy storage density. The introduced material is composed of a mixture of cement and cast-iron particles. To obtain an optimal mixture, different samples of the material are prepared with different ratios of the cement-iron weights. The thermal conductivity of the produced samples is measured by using the linear heat conduction method. The specific heat capacity of the produced mixtures is calculated by using the Rule of the mixture. The obtained results show that the introduced material has a significant enhancement in thermal conductivity. Where, thermal conductivity as high as ~6.0 W/m.K and energy storage density as high as ~788 Joule/cm3 are achieved. The estimated volume energy density is ~89% higher than that of water. The produced material has the advantage of high energy volume density, being unhazardous, chemically stable, eco-friendly, easy to fabricate, and integrate with solar thermal energy systems and is a low-cost material.

In-depth understanding of interfacial crystallization via Flash DSC and enhanced energy storage density in ferroelectric P(VDF-CTFE)/Au NRs nanocomposites for capacitor application

Soft Matter ◽  
2018 ◽  
Vol 14 (37) ◽  
pp. 7714-7723 ◽  
Author(s):  
Yingxin Chen ◽  
Lingyun Yao ◽  
Chengbiao Yang ◽  
Lei Zhang ◽  
Peng Zheng ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Crystallization Kinetics ◽  
Energy Storage Density ◽  
Storage Density

Great improvements in energy density are attained in P(VDF-CTFE)/Au NRs nanocomposites, and interfacial crystallization kinetics are well revealed by Flash DSC.

Achieving high discharge energy density and efficiency with NBT-based ceramics for application in capacitors

2019 ◽  
Vol 7 (14) ◽  
pp. 4072-4078 ◽  
Author(s):  
Zhongbin Pan ◽  
Di Hu ◽  
Yang Zhang ◽  
Jinjun Liu ◽  
Bo Shen ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
High Efficiency ◽  
Energy Storage Density ◽  
Discharge Energy ◽  
Stored Energy ◽  
High Discharge ◽  
Storage Density ◽  
Recoverable Energy ◽  
Discharge Energy Density

The 0.94(BNT–BST)–0.06KNN ceramic possesses an excellent stored energy storage density (Ws = ∼3.13 J cm−3), a recoverable energy storage density (Wr = ∼2.65 J cm−3), and maintains a relatively high efficiency (η ∼ 84.6%).

Nano-ZnO decorated ZnSnO3 as efficient fillers in PVDF matrixes: toward simultaneous enhancement of energy storage density and efficiency and improved energy harvesting activity

Nanoscale ◽  
2020 ◽  
Vol 12 (40) ◽  
pp. 20908-20921
Author(s):  
Abhishek Sasmal ◽  
Samar Kumar Medda ◽  
P. Sujatha Devi ◽  
Shrabanee Sen
Keyword(s):  
Energy Storage ◽  
Dielectric Loss ◽  
Energy Harvesting ◽  
Dielectric Permittivity ◽  
Electrical Energy ◽  
Energy Storage Density ◽  
Storage Efficiency ◽  
Storage Density ◽  
Electrical Energy Storage ◽  
And Storage

Along with enhanced dielectric permittivity and suppressed dielectric loss, PVDF-ZnO@ZnSnO3 films showed simultaneous enhancement in electrical energy storage density and storage efficiency compared to PVDF-ZnSnO3 composites.

Bi0.5Na0.5TiO3-based relaxor ferroelectric ceramic with large energy density and high efficiency under a moderate electric field

2019 ◽  
Vol 7 (34) ◽  
pp. 10514-10520 ◽  
Author(s):  
Xiaoshuang Qiao ◽  
Di Wu ◽  
Fudong Zhang ◽  
Bi Chen ◽  
Xiaodan Ren ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Electric Field ◽  
High Efficiency ◽  
Ferroelectric Ceramic ◽  
Relaxor Ferroelectric ◽  
Large Energy ◽  
Energy Storage Density ◽  
Storage Density ◽  
Moderate Electric Field

Large energy storage density and high efficiency in Bi0.5Na0.5TiO3-based relaxor ferroelectric ceramic induced by AgNbO3 doping.

Sign in / Sign up

Export Citation Format

Share Document