scholarly journals Energy Storage Performance of Sandwich Structured Pb(Zr0.4Ti0.6)O3/BaZr0.2Ti0.8O3/Pb(Zr0.4Ti0.6)O3 Films

Crystals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 575
Author(s):  
Jinxin Gu ◽  
Qiu Sun ◽  
Xiangqun Chen ◽  
Ying Song ◽  
YiLun Tang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Sol Gel ◽  
High Energy ◽  
Dielectric Constants ◽  
High Energy Density ◽  
Energy Storage Density ◽  
New Paradigm ◽  
Storage Density ◽  
Pzt Film ◽  
The Individual

We reported a sandwich structured Pb(Zr0.4Ti0.6)O3/BaZr0.2Ti0.8O3/Pb(Zr0.4Ti0.6)O3 (PZT/BZT/PZT) film fabricated by using the sol–gel method, which was dense and uniform with a unique perovskite structure. The PZT/BZT/PZT films displayed high dielectric constants up to 1722.45 at the frequency of 10 kHz. Additionally, the enhanced energy storage density of 39.27 J·cm−3 was achieved at room temperature and 2.00 MV/cm, which was higher than that of the individual BaZr0.2Ti0.8O3 film (21.28 J·cm−3). Furthermore, the energy storage density and efficiency of PZT/BZT/PZT film increased slightly with the increasing temperature from −140 °C to 200 °C. This work proves the feasibility and effectiveness of a sandwich structure in improving dielectric, leakage, and energy storage performances, providing a new paradigm for high-energy–density dielectrics applications.

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.

High energy storage density with high power density in Bi0.2Sr0.7TiO3/BiFeO3 multilayer thin films

2021 ◽  
Vol 9 (13) ◽  
pp. 4652-4660
Author(s):  
Baijie Song ◽  
Kun Zhu ◽  
Hao Yan ◽  
Liuxue Xu ◽  
Bo Shen ◽  
...  
Keyword(s):  
Energy Storage ◽  
Sol Gel ◽  
High Energy ◽  
Energy Storage Density ◽  
Ultrahigh Energy ◽  
Discharge Performance ◽  
Storage Density ◽  
Good Thermal Stability ◽  
High Energy Storage Density ◽  
High Energy Storage

A novel Bi0.2Sr0.7TiO3/BiFeO3 thin film prepared by sol–gel/spin coating possesses ultrahigh energy storage density, good thermal stability and excellent charge-discharge performance.

scholarly journals Composite of Aromatic Polythiourea/BaTiO3 Nanowires with High Energy Density and High Discharge Efficiency for Energy Storage Applications

2021 ◽  
Author(s):  
Li Xiali ◽  
Liuwei Shi ◽  
Lei Chen ◽  
Wenyao Yang ◽  
Xiaoting Zha ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Energy Storage Density ◽  
High Discharge ◽  
Storage Density ◽  
Discharge Efficiency ◽  
High Energy Storage Density ◽  
High Energy Storage

Abstract Ceramic/polymer nanocomposites have shown great potential in high energy storage density capacitors for pulsed power applications. However, due to the difference in surface energy between inorganic fillers and polymers, the discharge energy density and efficiency of nanocomposites are limited. In this article, the BaTiO3 (BT) nanowires (nws) modified with dopamine (Dopa) was introduced into aromatic polythiourea (ArPTU) polymer matrix as composite for high performance dielectrics. This is a new path about the introduction of a high dielectric constant ceramic into high dipole moment linear polymers (HDMLP), which produces the polymer composite with high energy storage density and high discharge efficiency. The composite ArPTU/BT nws shows an energy density of 7.5 Jžcm-3 and high efficiency more than 90 % is obtained under an electric field of 250 MVžm-1. It also has been found that the modification of BT nws with the dopamine reduces the dielectric loss of composite effectively due to the good synergistic effective between ArPTU and BT nws, and high stability of composite for energy storage is also achieved. This work provides an effective solution for achieving high energy storage density and high discharge efficiency in polymer dielectrics for practical capacitor applications.

scholarly journals Enhanced energy storage density of all-organic fluoropolymer composite dielectric via introducing crosslinked structure

RSC Advances ◽  
2021 ◽  
Vol 11 (25) ◽  
pp. 15177-15183
Author(s):  
Xiongjie Li ◽  
Ying Yang ◽  
Yiping Wang ◽  
Shuting Pang ◽  
Jingjing Shi ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Energy Storage Density ◽  
Storage Density ◽  
Organic Composites

High energy density is achieved for all-organic composites by introducing crosslinked structure.

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