scholarly journals Significantly enhanced dielectric constant and energy storage properties in polyimide/reduced BaTiO3composite films with excellent thermal stability

RSC Advances ◽  
2019 ◽  
Vol 9 (14) ◽  
pp. 7706-7717 ◽  
Author(s):  
Shuangshuang Yue ◽  
Baoquan Wan ◽  
Yunying Liu ◽  
Qiwei Zhang
Keyword(s):  
Thermal Stability ◽  
Dielectric Constant ◽  
Energy Density ◽  
Barium Titanate ◽  
High Energy ◽  
High Energy Density ◽  
Excellent Thermal Stability ◽  
Energy Storage Properties ◽  
Storage Properties ◽  
Semiconductor Properties

The semiconductor properties of reduced barium titanate, with a high energy density of 9.7 J cm−3.

3,4,5-Trinitro-1-(nitromethyl)-1H-pyrazole (TNNMP): a perchlorate free high energy density oxidizer with high thermal stability

2017 ◽  
Vol 5 (21) ◽  
pp. 10437-10441 ◽  
Author(s):  
Dheeraj Kumar ◽  
Gregory H. Imler ◽  
Damon A. Parrish ◽  
Jean'ne M. Shreeve
Keyword(s):  
Thermal Stability ◽  
Energy Density ◽  
High Energy ◽  
High Thermal Stability ◽  
High Energy Density ◽  
Oxygen Balance ◽  
Excellent Thermal Stability ◽  
Energetic Properties

A rare high energy density oxidizer with excellent thermal stability along with good oxygen balance and energetic properties was synthesized and fully characterized.

Enhanced antiferroelectric phase stability in La-doped AgNbO3: perspectives from the microstructure to energy storage properties

2019 ◽  
Vol 7 (5) ◽  
pp. 2225-2232 ◽  
Author(s):  
Jing Gao ◽  
Yichi Zhang ◽  
Lei Zhao ◽  
Kai-Yang Lee ◽  
Qing Liu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Phase Stability ◽  
High Energy ◽  
High Energy Density ◽  
Lead Free ◽  
Antiferroelectric Phase ◽  
Energy Storage Properties ◽  
La Doped ◽  
Storage Properties

High energy density was achieved in lead-free La-doped AgNbO3 antiferroelectric ceramics.

Achieving high energy density and discharge efficiency in multi-layered PVDF–PMMA nanocomposites composed of 0D BaTiO3 and 1D NaNbO3@SiO2

2020 ◽  
Vol 8 (21) ◽  
pp. 7211-7220 ◽  
Author(s):  
Qinzhao Sun ◽  
Jiping Wang ◽  
Lixue Zhang ◽  
Pu Mao ◽  
Shujuan Liu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
High Energy ◽  
Structure Design ◽  
High Energy Density ◽  
Energy Storage Properties ◽  
Discharge Efficiency ◽  
Storage Properties

The choice of dielectric fillers and structure design play an important role in improving the energy storage properties of polymer-based nanocomposites.

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.

Relaxor ferroelectric 0.9BaTiO3–0.1Bi(Zn0.5Zr0.5)O3ceramic capacitors with high energy density and temperature stable energy storage properties

2017 ◽  
Vol 5 (37) ◽  
pp. 9552-9558 ◽  
Author(s):  
Qibin Yuan ◽  
Fangzhou Yao ◽  
Yifei Wang ◽  
Rong Ma ◽  
Hong Wang
Keyword(s):  
Energy Storage ◽  
Ferroelectric Ceramic ◽  
High Energy ◽  
Relaxor Ferroelectric ◽  
High Energy Density ◽  
Solid State Method ◽  
Conventional Solid State Method ◽  
Energy Storage Properties ◽  
Storage Properties ◽  
High Energy Storage

A relaxor ferroelectric ceramic for high energy storage applications based on 0.9BaTiO3–0.1Bi(Zn0.5Zr0.5)O3(0.9BT–0.1BZZ) was successfully fabricatedviaa conventional solid-state method.

scholarly journals Effect of sintering temperature on the dielectric, ferroelectric and energy storage properties of SnO2-doped Bi0.5(Na0.8K0.2)0.5TiO3 lead-free ceramics

2020 ◽  
Vol 10 (04) ◽  
pp. 2050011
Author(s):  
Nguyen Truong-Tho ◽  
Le Dai Vuong
Keyword(s):  
Dielectric Constant ◽  
Energy Storage ◽  
Sintering Temperature ◽  
High Energy ◽  
Lead Free ◽  
Energy Storage Properties ◽  
Energy Storage Efficiency ◽  
High Dielectric ◽  
Storage Properties ◽  
High Energy Storage

Sintered lead-free [Formula: see text]([Formula: see text][Formula: see text]([Formula: see text][Formula: see text]O3 ceramics (BNKTS) have been fabricated via a solid-state reaction. The effect of sintering temperature on the structural, morphological, dielectric, ferroelectric and energy storage properties of BNKTS ceramics was investigated, and it was found that the electrical properties of the synthesized ceramics increased with the increase in the sintering temperature, and the highest values were achieved at [Formula: see text]C. The ceramics sintered at the optimized temperature of [Formula: see text]C exhibited the best physical, dielectric, ferroelectric and energy storage properties, namely, high density (the relative density, [Formula: see text][Formula: see text]g.cm[Formula: see text], approximate to 96.7% of the theoretical value), high densification factor ([Formula: see text]), high dielectric constant ([Formula: see text]), low dielectric loss (tan[Formula: see text]), highest dielectric constant ([Formula: see text]), high remanent polarization ([Formula: see text]C.cm[Formula: see text], high coercive field ([Formula: see text][Formula: see text]kV/cm), high energy storage density (0.12[Formula: see text]J/cm[Formula: see text], and high energy storage efficiency (41.7% at 46.3[Formula: see text]kV/cm).

scholarly journals Strategies to Improve the Energy Storage Properties of Perovskite Lead-Free Relaxor Ferroelectrics: A Review

Materials ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 5742
Author(s):  
Vignaswaran Veerapandiyan ◽  
Federica Benes ◽  
Theresa Gindel ◽  
Marco Deluca
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Electrical Energy ◽  
High Energy ◽  
Relaxor Ferroelectrics ◽  
High Energy Density ◽  
Lead Free ◽  
Chemical Additives ◽  
Energy Storage Properties ◽  
Novel Processing

Electrical energy storage systems (EESSs) with high energy density and power density are essential for the effective miniaturization of future electronic devices. Among different EESSs available in the market, dielectric capacitors relying on swift electronic and ionic polarization-based mechanisms to store and deliver energy already demonstrate high power densities. However, different intrinsic and extrinsic contributions to energy dissipations prevent ceramic-based dielectric capacitors from reaching high recoverable energy density levels. Interestingly, relaxor ferroelectric-based dielectric capacitors, because of their low remnant polarization, show relatively high energy density and thus display great potential for applications requiring high energy density properties. In this study, some of the main strategies to improve the energy density properties of perovskite lead-free relaxor systems are reviewed, including (i) chemical modification at different crystallographic sites, (ii) chemical additives that do not target lattice sites, and (iii) novel processing approaches dedicated to bulk ceramics, thick and thin films, respectively. Recent advancements are summarized concerning the search for relaxor materials with superior energy density properties and the appropriate choice of both composition and processing routes to match various applications’ needs. Finally, future trends in computationally-aided materials design are presented.

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