High Breakdown Strength, Energy Density, and Fast Discharge Times in PLZST Films Achieved by Designed Double-Blocking Structures

2021 ◽  
Author(s):  
Jibo Huang ◽  
Manwen Yao ◽  
Xi Yao
Keyword(s):  
Energy Density ◽  
Breakdown Strength ◽  
Fast Discharge

Novel barium titanate based capacitors with high energy density and fast discharge performance

2017 ◽  
Vol 5 (37) ◽  
pp. 19607-19612 ◽  
Author(s):  
Wen-Bo Li ◽  
Di Zhou ◽  
Li-Xia Pang ◽  
Ran Xu ◽  
Huan-Huan Guo
Keyword(s):  
Energy Efficiency ◽  
Energy Density ◽  
Breakdown Strength ◽  
High Energy ◽  
High Energy Density ◽  
Discharge Energy ◽  
Discharge Performance ◽  
Storage Performance ◽  
Fast Discharge ◽  
Discharge Energy Density

Novel BaTiO3-based capacitors show promising energy storage performance with high breakdown strength and discharge energy density and outstanding energy efficiency.

scholarly journals Recent Advances in the Synthesis of Polymer-Grafted Low-K and High-K Nanoparticles for Dielectric and Electronic Applications

Molecules ◽  
2021 ◽  
Vol 26 (10) ◽  
pp. 2942
Author(s):  
Bhausaheb V. Tawade ◽  
Ikeoluwa E. Apata ◽  
Nihar Pradhan ◽  
Alamgir Karim ◽  
Dharmaraj Raghavan
Keyword(s):  
Energy Density ◽  
Polymer Nanocomposites ◽  
High Performance ◽  
Breakdown Strength ◽  
Polymer Nanocomposite ◽  
High Energy ◽  
Polymer Chains ◽  
High Energy Density ◽  
Grafted Nanoparticles ◽  
Grafting From

The synthesis of polymer-grafted nanoparticles (PGNPs) or hairy nanoparticles (HNPs) by tethering of polymer chains to the surface of nanoparticles is an important technique to obtain nanostructured hybrid materials that have been widely used in the formulation of advanced polymer nanocomposites. Ceramic-based polymer nanocomposites integrate key attributes of polymer and ceramic nanomaterial to improve the dielectric properties such as breakdown strength, energy density and dielectric loss. This review describes the ”grafting from” and ”grafting to” approaches commonly adopted to graft polymer chains on NPs pertaining to nano-dielectrics. The article also covers various surface initiated controlled radical polymerization techniques, along with templated approaches for grafting of polymer chains onto SiO2, TiO2, BaTiO3, and Al2O3 nanomaterials. As a look towards applications, an outlook on high-performance polymer nanocomposite capacitors for the design of high energy density pulsed power thin-film capacitors is also presented.

Enhanced dielectric properties and thermostability in polyimide composites with core-shell structured polyimide@BaTiO3 nanoparticles

2021 ◽  
pp. 095400832199352
Author(s):  
Wei Deng ◽  
Guanguan Ren ◽  
Wenqi Wang ◽  
Weiwei Cui ◽  
Wenjun Luo
Keyword(s):  
Dielectric Constant ◽  
Dielectric Loss ◽  
Energy Density ◽  
Breakdown Strength ◽  
In Situ Polymerization ◽  
Dielectric Materials ◽  
High Energy ◽  
Amic Acid ◽  
High Energy Density ◽  
Core Shell

Polymer composites with high dielectric constant and thermal stability have shown great potential applications in the fields relating to the energy storage. Herein, core-shell structured polyimide@BaTiO3 (PI@BT) nanoparticles were fabricated via in-situ polymerization of poly(amic acid) (PAA) and the following thermal imidization, then utilized as fillers to prepare PI composites. Increased dielectric constant with suppressed dielectric loss, and enhanced energy density as well as heat resistance were simultaneously realized due to the presence of PI shell between BT nanoparticles and PI matrix. The dielectric constant of PI@BT/PI composites with 55 wt% fillers increased to 15.0 at 100 Hz, while the dielectric loss kept at low value of 0.0034, companied by a high energy density of 1.32 J·cm−3, which was 2.09 times higher than the pristine PI. Moreover, the temperature at 10 wt% weight loss reached 619°C, demonstrating the excellent thermostability of PI@BT/PI composites. In addition, PI@BT/PI composites exhibited improved breakdown strength and toughness as compared with the BT/PI composites due to the well dispersion of PI@BT nanofillers and the improved interfacial interactions between nanofillers and polymer matrix. These results provide useful information for the structural design of high-temperature dielectric materials.

Significantly Enhanced Energy Density and Breakdown Strength of Polymer Nanocomposites Using Highly Textured [111]c BaTiO3 Platelets

2021 ◽  
pp. 161324
Author(s):  
Jingjing Liu ◽  
Zhonghua Dai ◽  
Jinglong Xie ◽  
Shun Zhou ◽  
Weiguo Liu ◽  
...  
Keyword(s):  
Energy Density ◽  
Polymer Nanocomposites ◽  
Breakdown Strength

scholarly journals Size and temperature effects on dielectric breakdown of ferroelectric films

2020 ◽  
Author(s):  
Sheng Tong
Keyword(s):  
Energy Density ◽  
Electric Field ◽  
Dielectric Breakdown ◽  
Breakdown Strength ◽  
Operating Temperature ◽  
Electric Energy ◽  
Ferroelectric Films ◽  
Lead Lanthanum Zirconate Titanate ◽  
Dimensional Parameters ◽  
Electric Energy Density

Abstract The paper introduces a model of dielectric breakdown strength. The model integrated thermal breakdown and defect models, representing the relationship between the electric field of ferroelectric films and dimensional parameters and operating temperature. This model is verified with experimental results of the lead lanthanum zirconate titanate (PLZT) films of various film thickness (d = 0.8 – 3 mm), electrode area (A = 0.0020 – 25 mm2) tested under a range of operating temperature (T = 300 – 400 K) with satisfying fitting results. Also learned is a relationship that the recoverable electric energy density is directly proportional to the square of breakdown electric field. This relationship is found viable in predicting the electric energy density in terms of variables of d, A, and T for the PLZT films.

High-performance capacitors based on NaNbO3 nanowires/poly(vinylidene fluoride) nanocomposites

2018 ◽  
Vol 6 (30) ◽  
pp. 14614-14622 ◽  
Author(s):  
Zhongbin Pan ◽  
Lingmin Yao ◽  
Guanglong Ge ◽  
Bo Shen ◽  
Jiwei Zhai
Keyword(s):  
Energy Density ◽  
Power Density ◽  
High Performance ◽  
Vinylidene Fluoride ◽  
Nanocomposite Films ◽  
Discharge Energy ◽  
High Discharge ◽  
Fast Discharge ◽  
Poly Vinylidene Fluoride ◽  
Discharge Energy Density

Nanocomposite films loaded with small NaNbO3 nanowires exhibit a high discharge energy density of 12.26 J cm−3 at 410 MV m−1, superior power density of 2.01 MW cm−3, and ultra-fast discharge speed of 146 ns.

Improved breakdown strength and energy density of Al2O3/nano-ZrO2 composite films via enhanced interfacial repairing behavior

2018 ◽  
Vol 44 (17) ◽  
pp. 21428-21436 ◽  
Author(s):  
Mengxin Li ◽  
Manwen Yao ◽  
Zhen Su ◽  
Wenbin Gao ◽  
Xi Yao
Keyword(s):  
Energy Density ◽  
Breakdown Strength ◽  
Composite Films
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