scholarly journals Analogous Anti-Ferroelectricity in Y2O3-Coated (Pb0.92Sr0.05La0.02)(Zr0.7Sn0.25Ti0.05)O3 Ceramics and Their Energy-Storage Performance

Materials ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 119 ◽  
Author(s):  
Bijun Fang ◽  
Yan Jiang ◽  
Xiangyong Zhao ◽  
Shuai Zhang ◽  
Dun Wu ◽  
...  
Keyword(s):  
Grain Size ◽  
Energy Storage ◽  
Electric Field ◽  
Combustion Method ◽  
Measurement Range ◽  
Pure Perovskite Structure ◽  
Storage Performance ◽  
Microstructural Morphology ◽  
Polarization Electric Field ◽  
Sintering Method

Antiferroelectric analogous (Pb0.92Sr0.05La0.02)(Zr0.7Sn0.25Ti0.05)O3 (PSLZSnT) ceramics were prepared by the solid-state sintering method by introducing a Y2O3-coating via the self-combustion method. The synthesized Y2O3-doped PSLZSnT ceramics present pseudo-cubic structure and rather uniform microstructural morphology accompanied by relatively small grain size. Excellent energy-storage performance is obtained in the Y2O3-doped PSLZSnT ceramics, in which the value of the energy-storage density presents a linearly increasing trend within the electric field measurement range. Such excellent performance is considered as relating to the rather pure perovskite structure, high relative density accompanied by relatively small grain size, and the antiferroelectric-like polarization-electric field behavior.

New Antiferroelectric Perovskite System with Ultrahigh Energy-Storage Performance at Low Electric Field

2019 ◽  
Vol 31 (3) ◽  
pp. 979-990 ◽  
Author(s):  
Pan Gao ◽  
Zenghui Liu ◽  
Nan Zhang ◽  
Hua Wu ◽  
Alexei A. Bokov ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electric Field ◽  
Ultrahigh Energy ◽  
Storage Performance

scholarly journals Excellent Energy Storage Performance in NaNbO3-Based Relaxor Antiferroelectric Ceramics Under a Low Electric Field

2021 ◽  
Author(s):  
Xuxin Cheng ◽  
Pengyuan Fan ◽  
Xiaoming Chen
Keyword(s):  
Energy Storage ◽  
Electric Field ◽  
Low Cost ◽  
Temperature Stability ◽  
High Energy ◽  
Pulsed Power ◽  
Pure Perovskite Structure ◽  
Stable Performance ◽  
Energy Storage Efficiency ◽  
Storage Property

Abstract NaNbO3-based antiferroelectric (AFE) ceramics have the prominent advantages of stable performance and low cost. However, its energy storage property is often remarkably limited by the hysteresis of the antiferroelectric to ferroelectric phase transformation. In this work, 0.88Na(Nb1 − xTax)O3–0.12Bi0.2Sr0.7TiO3 (x = 0–0.075) antiferroelectric ceramics were synthesized using a conventional mixed oxide route. Ta5+ were completely dissolved into the lattice of 0.88NaNbO3–0.12Bi0.2Sr0.7TiO3 to form a pure perovskite structure. With increased Ta content, the AFE orthogonal P phase was replaced by AFE orthogonal R phase progressively. Meanwhile, the dielectric constant curve showed relaxor-like properties. As a result, slender P–E curves with reduced hysteresis loss and decreased residual polarization were achieved. Interestingly, a large recoverable energy storage density (Wrec ≈ 2.16 J cm− 3) and high energy storage efficiency (η ≈ 80.7%) were obtained simultaneously under a low driving electric field of 15 kV mm− 1 at doping ratio (x) of 0.075. In addition, the 0.88Na(Nb0.925Ta0.075)O3–0.12Bi0.2Sr0.7TiO3 sample exhibited excellent temperature stability, indicating an ideal candidate in future pulsed power capacitor.

scholarly journals Influence of Bi nonstoichiometry on the energy storage properties of 0.93KNN–0.07BixMN relaxor ferroelectrics

2018 ◽  
Vol 08 (06) ◽  
pp. 1830006 ◽  
Author(s):  
Xiaoshuang Qiao ◽  
Xiaoshuai Zhang ◽  
Di Wu ◽  
Xiaolian Chao ◽  
Zupei Yang
Keyword(s):  
Grain Size ◽  
Energy Storage ◽  
Impedance Analysis ◽  
Practical Method ◽  
Relaxor Ferroelectrics ◽  
Pure Perovskite Structure ◽  
Submicron Scale ◽  
Energy Storage Properties ◽  
Stoichiometry Control ◽  
Storage Properties

Ceramic-based dielectric capacitors are becoming more and more important in electronic devices. The ceramics of 0.93K[Formula: see text]Na[Formula: see text]NbO3–0.07Bix(Mg[Formula: see text]Nb[Formula: see text])O3 (0.93KNN–0.07BixMN) ([Formula: see text], 2/3, 0.75 and 0.95) were successfully fabricated by virtue of the solid reaction process in this work. The results showed that the amount of Bi content has a significant impact on the ceramics of 0.93KNN–0.07BixMN. XRD indicates that all specimens exhibit a pure perovskite structure and existing oxygen vacancy in the specimens. The mean grain size for all specimens belong to submicron scale, and the sample of [Formula: see text] owns the smallest grain size is 0.11[Formula: see text][Formula: see text]m. The maximum dielectric constant increases but the phase transition temperature [Formula: see text] exhibits a contrary tendency at 1[Formula: see text]MHz with increasing Bi concentration. Besides, all ceramics are relaxor ferroelectric. The impedance analysis further revealed that the activation energy of the ceramics increases with Bi content. Eventually, the highest [Formula: see text] of 58.8% and [Formula: see text] of 1.30[Formula: see text]J/cm3 are simultaneously achieved in the sample with [Formula: see text]. Overall, we demonstrate in this work that stoichiometry control of Bi in 0.93KNN–0.07BixMN ceramics is a practical method to obtain the desired structural, dielectric and energy storage properties.

Electric field assisted assembly of 1D supramolecular nanofibres for enhanced supercapacitive performance

2020 ◽  
Vol 8 (26) ◽  
pp. 13106-13113
Author(s):  
Suman Kundu ◽  
Subi J. George ◽  
Giridhar U. Kulkarni
Keyword(s):  
Energy Storage ◽  
Electric Field ◽  
Supercapacitive Performance ◽  
Storage Performance ◽  
Ac Electric Field

Supramolecular nanofibres aligned by applying an external AC electric field for enhancing the energy storage performance of a planar supercapacitor.

An Sr doping 0.65(Bi0.5Na0.5) TiO3-0.35 (Sr0.7+x+ Bi0.2) TiO3 Ceramic with Tunable Crystal Structures and Energy Storge Performances

2021 ◽  
Author(s):  
Yiming Liu ◽  
Weimin Xia ◽  
Zhizhong Li ◽  
Danfeng Lu ◽  
Yan Feng
Keyword(s):  
Grain Size ◽  
Energy Storage ◽  
Electric Field ◽  
Temperature Stability ◽  
Composite Ceramic ◽  
Electric Polarization ◽  
Ferroelectric Ceramics ◽  
Charge Fluctuation ◽  
Average Grain Size ◽  
A Site

Abstract A series of 0.65(Bi0.5 Na0.5 )TiO3 -0.35(Sr0.7+x +Bi0.2 )TiO3 (BNT-S0.7+x BT) composite ceramic pellets are synthesized using the traditional solid sintering method, where a tunable x, that is the changeable volume of Sr, is expected to tailor energy storage through the adjustments of the A-site stoichiometry in BNT-S0.7+x BT. We find that a small excess of Sr2+ ions results in an extensively tunning on the crystal grain size and even contributes to the A-site disorder and charge fluctuation of BNT-S0.7+x BT. As such, the BNT-S0.7+x BT exhibits a minimum average grain size and a highly compact crystal morphology. Meanwhile, a relatively thin polarization-electric field (P-E) loop with a high maximum polarization of 42μC/cm2 and a low remnant electric polarization of 5μC/cm2 are obtained in a BNT-S0.75 BT sample under 100 kV/cm, which corresponds to a large energy density of 9.81 J cm-3 . Attractively, this ceramic possesses an excellent temperature stability of polarization performances and strain under high electric field of 100kV/cm, which favors of the energy storage of relaxor ferroelectric ceramics and is valuable to a supercapacitor serving at evaluated high temperature.

Ultrahigh energy-storage potential under low electric field in bismuth sodium titanate-based perovskite ferroelectrics

2018 ◽  
Vol 6 (21) ◽  
pp. 9823-9832 ◽  
Author(s):  
Jie Yin ◽  
Yuxing Zhang ◽  
Xiang Lv ◽  
Jiagang Wu
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Electric Field ◽  
Sodium Titanate ◽  
Bismuth Sodium Titanate ◽  
Ultrahigh Energy ◽  
Storage Performance ◽  
Storage Potential ◽  
Recoverable Energy ◽  
Bismuth Sodium

Enhancement in energy-storage performance with a recoverable energy density of 2.42 J cm−3 in {Bi0.5[(Na0.8K0.2)0.90Li0.10]0.5}0.96Sr0.04(Ti0.975Ta0.025)O3 ceramics by a hot-pressed sintering (HPS) method.

scholarly journals Enhanced Energy Storage Density and Excellent Thermal Stability Under Low Electric Fields of KF-added BNT–ST-AN Relaxor Ferroelectric Ceramics Prepared by the Solid-state Combustion Technique

2021 ◽  
Author(s):  
Chittakorn Kornphom ◽  
Kamonporn Saenkam ◽  
Theerachai Bongkarn
Keyword(s):  
Grain Size ◽  
Energy Storage ◽  
Solid State ◽  
Electric Field ◽  
Ferroelectric Ceramics ◽  
Energy Storage Density ◽  
Excellent Thermal Stability ◽  
Storage Density ◽  
Wide Range ◽  
Combustion Technique

Abstract Homogeneous 0.722(Bi0.5Na0.5TiO3)-0.228(SrTiO3)-0.05(AgNbO3) (BNT-ST-AN) ceramics with various amounts of potassium fluoride (KF) added were prepared by the solid-state combustion technique. The ceramics presented a single perovskite phase with coexisting rhombohedral (R), cubic (C) and orthorhombic (O) phases. The amount of the R phase decreased while the percentage of the C+O phase increased when KF addition increased from 0.0 to 3.0 mol%. The smallest grain size, the highest density and maximum dielectric constant (em) were achieved with a KF addition of 1.5 mol%. Following this design composition of the ceramics, the highest recoverable energy-storage density (Wrec ~1.60 J/cm3) and η above 85.8% at a low electric field (100 kV/cm) were obtained from BNT-ST-AN with KF addition at 1.5 mol% because this composition contained a morphotropic phase boundary (MPB) region and had the smallest grain size, which gave the lowest remnant polarization (Pr) and a large maximum polarization (Pm). Additionally, BNT-ST-AN with KF addition at 0.15 mol% exhibits stability over a wide range of temperatures (25–150°C) at a low electric field (100 kV/cm), which shows great potential in pulse-power system applications.

Sign in / Sign up

Export Citation Format

Share Document