Improved Dielectric Properties and Energy Storage Densities of BaTiO3 Doped PVDF Composites by Heat Treatment and Surface Modification of BaTiO3

2022 ◽  
Author(s):  
Xiaodong Sang ◽  
Xingjia Li ◽  
Dandan Zhang ◽  
Xiuli Zhang ◽  
Huiping Wang ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Surface Modification ◽  
Energy Storage ◽  
Dielectric Properties ◽  
Polyvinylidene Fluoride ◽  
Breakdown Strength ◽  
Maximum Energy ◽  
Energy Storage Materials ◽  
Energy Storage Density ◽  
Storage Performance

Abstract The dielectric properties of barium titanate/polyvinylidene fluoride (BT/PVDF) composites are investigated. The doped BT particles are prepared by using simple heat treatment. It is found that 1000 ℃ is the optimal temperature for the doped BT particles to improve the dielectric properties of BT/PVDF composites. Besides, we also find that the breakdown strength of the BT/PVDF composites can be significantly enhanced when the surface of the doped BT particles are pre-modified with phthalic acid or KH550. In particular, the BT/PVDF composites doped with KH550 modified BT particles have the maximum energy storage density of 4.08 J/cm3, which is 81.33 % higher than that of BT/PVDF composites doped with BT particles and without any treatment. Therefore, we can conclude that heat treatment and surface modification of doped BT particles could become new approaches to enhance the energy storage performance of the BT/PVDF composites, which has a good application prospect in the field of dielectric energy storage materials.

Fabrication of Energy Storage Media BST/PVDF-PAn

2006 ◽  
Vol 949 ◽  
Author(s):  
Dabing Luo ◽  
Yan Guo ◽  
Hua Hao ◽  
Hanxing Liu ◽  
Shixi Ouyang
Keyword(s):  
Dielectric Constant ◽  
Energy Storage ◽  
Emulsion Polymerization ◽  
Lower Energy ◽  
Continuous Media ◽  
Maximum Energy ◽  
Energy Storage Density ◽  
Storage Density ◽  
Storage Performance ◽  
Storage Media

ABSTRACTPermittivity and anti-voltage ability commonly determined the energy storage density of material. Although composite could be molded easier than ceramic, its lower energy storage density prevented the material from application since the polymer usually took on poor dielectric constant. In order to enhance the energy storage performance of composite, PAn was introduced to PVDF by emulsion polymerization. SEM of the co-polymers showed that they could construct continuous media till the concentrate of aniline reached 25% while polymerizing. The permittivity of polymer rose along with the concentrate increasing of aniline and pH falling value of retreating solution. The permittivity and anti-voltage strength of composite also charged correspondingly. As a consequence, the energy storage density innovated much higher than ever. The maximum energy storage density could approach 0.9185Johr/cc.

Enhanced energy storage properties of barium titanate ceramics made from surface modified particles

2013 ◽  
Vol 03 (03) ◽  
pp. 1350023 ◽  
Author(s):  
Zhifu Liu ◽  
Zhiqiang Zhang ◽  
Faqiang Zhang ◽  
Yongxiang Li
Keyword(s):  
Electron Microscopy ◽  
Surface Modification ◽  
Energy Storage ◽  
Dielectric Properties ◽  
Barium Titanate ◽  
Energy Storage Density ◽  
Storage Density ◽  
Energy Storage Properties ◽  
Surface Modified ◽  
Storage Properties

Surface modification of barium titanate particles has been carried out using a wet chemical method. The microstructural and dielectric properties of the ceramics made from surface modified particles were extensively investigated by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and dielectric properties measurements. The breakdown strength increased by 69% and 117% for the Al 2 O 3 and B 2 O 3– SiO 2 modified ceramics, respectively. An energy storage density of up to 3.2 J/cm3 has been obtained. The suppression of grain boundary electron transport and reduction in pore defects lead to the energy storage properties enhancement of the modified ceramics. These results indicated that surface modification of ceramic particles is a promising approach to obtain dielectric ceramics with high energy storage density.

scholarly journals Electron-Beam Irradiation for Boosting Storage Energy Density of Tuned Poly(vinylidene fluoride-hexafluoropropylene)/Graphene Nanoplatelet Polymer Composites

Crystals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 633
Author(s):  
Ardian Agus Permana ◽  
Somyot Chirasatitsin ◽  
Chatchai Putson
Keyword(s):  
Electron Beam ◽  
Energy Storage ◽  
Dielectric Properties ◽  
Vinylidene Fluoride ◽  
Graphene Nanoplatelets ◽  
Energy Storage Materials ◽  
Energy Storage Density ◽  
Storage Density ◽  
Storage Materials ◽  
Poly Vinylidene Fluoride

In current, the energy storage materials based on electrets and ferroelectric polymers are urgently demanded for electric power supply and renewable energy applications. The high energy storage density can be enhanced by conducting or inorganic fillers to ferroelectric polymer matrix. However, agglomeration, phase separation of fillers, interfacial phase regions and crystallinity of matrix remain the main factors for the improvement of energy storage density in those composites. Poly(vinylidene fluoride-hexafluoropropylene) was modified with graphene nanoplatelets for enhanced the dielectric properties and energy storage density, which combines the irradiated by electron beam. Tuning effect of the crystalline regions and polar phases with graphene nanoplatelets and electron irradiation on its surface, structure, electrical and energy storage properties were observed. The film homogeneity was increased by reducing the pores, along with the improvement of surface roughness and hydrophobicity, which related with the dielectric properties and energy storage density. The β-phase fraction and crystallinity improvement significantly affect electrical properties by improving polarization and dielectric constant. As a core, electron beam dramatically reduce the crystals size by two times. Hence, energy storage density of composites was enhanced, while energy loss was reduced under operating conditions. Results on the improvement of energy efficiency were from 68.11 to 74.66% for neat poly(vinylidene fluoride-hexafluoropropylene) (P(VDF-HFP)), much higher than previously reported of 58%, and doubled for P(VDF-HFP)/GNPs composites which will be discussed and evaluated for the practical energy storage materials.

Improvement of Dielectric Breakdown Strength in (1-x)Sr0.7Ba0.3Nb2O6-xSr0.7Bi0.2TiO3 Ceramics

2020 ◽  
Vol 842 ◽  
pp. 153-159
Author(s):  
Lei Cao ◽  
Ying Yuan ◽  
En Zhu Li ◽  
Shu Ren Zhang
Keyword(s):  
Energy Storage ◽  
Dielectric Breakdown ◽  
Breakdown Strength ◽  
Relaxor Behavior ◽  
Energy Storage Density ◽  
Dielectric Breakdown Strength ◽  
Storage Density ◽  
Storage Performance

In this work, a series of (1-x)Sr0.7Ba0.3Nb2O6-xSr0.7Bi0.2TiO3 ceramics were formulated by a phase-mixed sintering, the microstructure and energy storage performance were studied. The introduction of SBT induces the formation of equiaxed crystals leading to the denser microstructure, thus improving the dielectric breakdown strength. In addition, the enhancement of relaxor behavior improves the energy storage performance. For 0.94Sr0.7Ba0.3Nb2O6-0.06Sr0.7Bi0.2TiO3, an energy storage density of 0.49J/cm3 and an efficiency of 94.2% were achieved.

INFLUENCE OF CaF2–4LiF ADDITIVE ON SINTERING AND ENERGY STORAGE PERFORMANCE OF SrTiO3 CERAMICS

2011 ◽  
Vol 01 (02) ◽  
pp. 191-195
Author(s):  
YIQIU LI ◽  
HANXING LIU ◽  
GUANGHUI ZHAO ◽  
JING XU ◽  
YUNJIANG CUI ◽  
...  
Keyword(s):  
Energy Storage ◽  
Crystalline Structure ◽  
Breakdown Strength ◽  
Sintering Temperature ◽  
Energy Storage Density ◽  
Storage Density ◽  
Storage Performance ◽  
Notable Increase ◽  
Power Application ◽  
Srtio3 Ceramics

The CaF2–4LiF additive was added into SrTiO3 ceramics in order to decrease the sintering temperature for compact pulse power application. The crystalline structure, microstructure and energy storage performance of sintered ceramics were studied. Incorporating CaF2–4LiF additive to SrTiO3 ceramics contributes to a notably enhancement of the energy storage density. The great enhancement in energy storage density occurred due to the notable increase in breakdown strength and the refinement of microstructure. With 2 at% additive, the samples exhibited an average breakdown strength of 31.8 kV/mm, and an energy storage density of 1.212 J/cm3 which is about 1.4 times higher than pure SrTiO3 .

scholarly journals Dielectric Breakdown Strength and Energy Storage Density of CCTO-ZBS Electroceramic

2020 ◽  
Vol 596 ◽  
pp. 012006
Author(s):  
Muhammad Qusyairie Saari ◽  
Julie Juliewatty Mohamed ◽  
Muhammad Azwadi Sulaiman ◽  
Mohd Fariz Abd Rahman ◽  
Zainal Arifin Ahmad ◽  
...  
Keyword(s):  
Energy Storage ◽  
Dielectric Breakdown ◽  
Breakdown Strength ◽  
Energy Storage Density ◽  
Dielectric Breakdown Strength ◽  
Storage Density

scholarly journals Construction of a Three-Dimensional BaTiO3 Network for Enhanced Permittivity and Energy Storage of PVDF Composites

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3585
Author(s):  
Xueqing Bi ◽  
Lujia Yang ◽  
Zhen Wang ◽  
Yanhu Zhan ◽  
Shuangshuang Wang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Polyvinylidene Fluoride ◽  
Dielectric Breakdown ◽  
Breakdown Strength ◽  
Sol Gel ◽  
Three Dimensional ◽  
Low Dielectric ◽  
Energy Storage Properties ◽  
Discharge Energy Density ◽  
Pure Pvdf

Three-dimensional BaTiO3 (3D BT)/polyvinylidene fluoride (PVDF) composite dielectrics were fabricated by inversely introducing PVDF solution into a continuous 3D BT network, which was simply constructed via the sol-gel method using a cleanroom wiper as a template. The effect of the 3D BT microstructure and content on the dielectric and energy storage properties of the composites were explored. The results showed that 3D BT with a well-connected continuous network and moderate grain sizes could be easily obtained by calcining a barium source containing a wiper template at 1100 °C for 3 h. The as-fabricated 3D BT/PVDF composites with 21.1 wt% content of 3D BT (3DBT–2) exhibited the best comprehensive dielectric and energy storage performances. An enhanced dielectric constant of 25.3 at 100 Hz, which was 2.8 times higher than that of pure PVDF and 1.4 times superior to the conventional nano–BT/PVDF 25 wt% system, was achieved in addition with a low dielectric loss of 0.057 and a moderate dielectric breakdown strength of 73.8 kV·mm−1. In addition, the composite of 3DBT–2 exhibited the highest discharge energy density of 1.6 × 10−3 J·cm−3 under 3 kV·mm−1, which was nearly 4.5 times higher than that of neat PVDF.

All‐Organic Dielectrics with High Breakdown Strength and Energy Storage Density for High‐Power Capacitors

2021 ◽  
pp. 2100116
Author(s):  
Qi‐Kun Feng ◽  
Jiang‐Bo Ping ◽  
Jing Zhu ◽  
Jia‐Yao Pei ◽  
Lei Huang ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Power ◽  
Breakdown Strength ◽  
Energy Storage Density ◽  
Storage Density ◽  
Organic Dielectrics
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