Study of Dielectric Characteristics and Energy Storage Properties of Sr0.7Bi0.2TiO3 Doped with CaTiO3

2020 ◽  
Vol 842 ◽  
pp. 168-173
Author(s):  
Peng Zhao ◽  
Bin Tang ◽  
Feng Si ◽  
Cheng Tao Yang ◽  
Shu Ren Zhang
Keyword(s):  
Energy Storage ◽  
Dielectric Breakdown ◽  
Breakdown Strength ◽  
High Energy ◽  
Low Dielectric ◽  
Average Grain Size ◽  
Energy Storage Properties ◽  
Energy Storage Efficiency ◽  
Storage Properties ◽  
High Energy Storage

Sr0.7Bi0.2TiO3 (SBT), a kind of lead-free relaxor ferroelectric, is attracting more and more attention for pulse energy storage applications due to the low remnant polarization and high energy storage efficiency (h). However, relatively low dielectric breakdown strength (DBS) limited the recoverable energy storage density (Wrec). Herein, CaTiO3 with high intrinsic DBS was introduced in SBT. The novel solid solutions (1-x)SBT-xCT with x = 0 - 0.15 shows pure pseudo-cubic perovskite structure. When x = 0.05, the maxium polarization are improved, and the CT doping decreases the average grain size, leading to an enhanced DBS. A high energy storage properties of 1.59 J/cm3 with the h of 87.4% at 220 kV/cm is achieved in 0.95SBT-0.05CT, which demonstrates that this 0.95SBT-0.05CT is prospective materials for energy storage application.

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 Annealing and Stretching Induced High Energy Storage Properties in All-Organic Composite Dielectric Films

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2279 ◽  
Author(s):  
Yefeng Feng ◽  
Cheng Peng ◽  
Qihuang Deng ◽  
Yandong Li ◽  
Jianbing Hu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Breakdown Strength ◽  
High Energy ◽  
Organic Polymer ◽  
Dielectric Films ◽  
Ferroelectric Domains ◽  
Energy Storage Properties ◽  
Inorganic Fillers ◽  
Storage Properties ◽  
High Energy Storage

High discharged energy density and charge–discharge efficiency, in combination with high electric breakdown strength, maximum electric displacement and low residual displacement, are very difficult to simultaneously achieve in single-component polymer dielectrics. Plenty of researches have reported polymer based composite dielectrics filled with inorganic fillers, through complex surface modification of inorganic fillers to improve interface compatibility. In this work, a novel strategy of introducing environmentally-friendly biological polyester into fluoropolymer matrix has been presented to prepare all-organic polymer composites with desirable high energy storage properties by solution cast process (followed by annealing or stretching post-treatment), in order to simplify the preparation steps and lower the cost. Fluoropolymer with substantial ferroelectric domains (contributing to high dielectric response) as matrix and poly (3-hydroxybutyrate-co-3-hydroxyvalerate) with excellent linear polarization property (resulting in high breakdown strength) as filler were employed. By high-temperature annealing, the size of ferroelectric domains could be improved and interfacial air defects could be removed, leading to elevated high energy storage density and efficiency in composite. By mono-directional stretching, the ferroelectric domains and polyester could be regularly oriented along stretching direction, resulting in desired high energy storage performances as well. Besides, linear dielectric components could contribute to high efficiency from their strong rigidity restrain effect on ferroelectric component. This work might open up the way for a facile fabrication of promising all-organic composite dielectric films with high energy storage properties.

Comprehensively enhanced energy-storage properties in (Pb1-3x/2Lax)(Zr0.995Ti0.005)O3 antiferroelectric ceramics via composition optimizing strategy

2021 ◽  
Author(s):  
Xiaohui Liu ◽  
Tongqing Yang ◽  
Weiping Gong
Keyword(s):  
Energy Storage ◽  
Breakdown Strength ◽  
High Energy ◽  
Hysteresis Width ◽  
Phase Switching ◽  
Energy Storage Properties ◽  
Storage Properties ◽  
High Energy Storage

Antiferroelectric materials as one of the front candidates for high energy storage capacitors should in principle combine small hysteresis width, and high breakdown strength, phase switching and polarization. However, the...

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.

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.

Multifunctional antiferroelectric MLCC with high-energy-storage properties and large field-induced strain

2017 ◽  
Vol 101 (6) ◽  
pp. 2313-2320 ◽  
Author(s):  
Liming Chen ◽  
Ningning Sun ◽  
Yong Li ◽  
Qiwei zhang ◽  
Liwen Zhang ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Energy ◽  
Large Field ◽  
Energy Storage Properties ◽  
Storage Properties ◽  
High Energy Storage

High energy storage properties of (Ni1/3Nb2/3)4+ complex-ion modified (Ba0.85Ca0.15)(Zr0.10Ti0.90)O3 ceramics

2018 ◽  
Vol 98 ◽  
pp. 166-172 ◽  
Author(s):  
Mingxing Zhou ◽  
Ruihong Liang ◽  
Zhiyong Zhou ◽  
Chenhong Xu ◽  
Xin Nie ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Energy ◽  
Energy Storage Properties ◽  
Storage Properties ◽  
High Energy Storage ◽  
Complex Ion
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