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relaxation antiferroelectric energy storage

Large Energy Storage Density and High Thermal Stability in a …

A highly textured (111)-oriented Pb0.8Ba0.2ZrO3 (PBZ) relaxor thin film with the coexistence of antiferroelectric (AFE) and ferroelectric (FE) phases was prepared on a Pt/TiOx/SiO2/Si(100) substrate by using a sol–gel method. A large recoverable energy storage density of 40.18 J/cm3 along with an efficiency of 64.1% was achieved at room …


Relaxor antiferroelectric ceramics with ultrahigh efficiency for energy storage …

By realizing the ergodic-state-dominated metastable relaxation structure, high energy storage performance and temperature-insensitive structure can be achieved in relaxor ferroelectric ceramics. Taking the Bi 0.5 Na 0.5 TiO 3 -based solid solution as an example, we demonstrate the metastable relaxation structure induced by the proportion …


Room temperature lead-free relaxor–antiferroelectric electroceramics for energy storage …

Round the globe, scientific communities have been searching for new materials for "green" energy, producing efficiently both high power as well as high energy density. Relaxor ferroelectrics (RFEs) have shown immense potential to achieve this goal. We report fabrication of [Na0.42Bi0.44Al0.06Ba0.08)TiO3 (NBAT–BT)],


Optimization of energy-storage properties for lead-free relaxor …

Nonetheless, double hysteresis loops and antiferroelectric-paraelectric phase transition led to a small energy-storage efficiency and temperature-sensitive energy-storage, respectively [5, 19,20,21]. Nowadays, relaxor ferroelectric ceramics as the potential energy-storage materials have attracted a lot of interests.


A lead free relaxation and high energy storage efficiency ceramics for energy storage …

Calculated energy storage density, energy loss density and energy storage efficiency as a function of electric field for the STB100x ceramics. Table 2 . Maximum polarization ( P max ), electric breakdown field ( E b ), remnant polarization ( P r ), energy storage density ( W 1 ), energy loss density ( W 2 ) and energy storage …


Strengthened dielectric relaxation and energy efficiency of …

Bi(Mg0.5Hf0.5)O3 (BMH) has been frequently exploited to engineer the material''s phase structure, micromorphology, dielectric, piezoelectric, and energy storage performance of BaTiO3 (BT)-based ceramics for the optimization of multifunctional dielectrics. Herein, combined with the Ba(Ti0.8Sn0.2)O3 relaxor, (1 – …


Enhanced energy storage properties of silver niobate antiferroelectric …

Among the advantages of linear dielectrics is good energy storage efficiency, but their low P m limits their energy storage density. FE have lower W r and efficiency because of their saturated hysteresis loops ( P – E loops) and lower E b . 3,4 AFE, on the other hand, exhibit a large energy storage density and show greater potential for …


Enhanced energy storage properties and antiferroelectric stability …

DOI: 10.1016/j.jmat.2021.11.013 Corpus ID: 244665204 Enhanced energy storage properties and antiferroelectric stability of Mn-doped NaNbO3-CaHfO3 lead-free ceramics: Regulating phase structure and tolerance factor The …


The study on the increase of relaxation and energy storage …

In this experiment, a new lead-free energy storage ceramic (1-x)(Na0.5Bi0.5)0.935Sr0.065TiO3–xNa0.7Bi0.08La0.02NbO3 was prepared using a conventional solid-phase sintering process, and the influence of doping with Na0.7Bi0.08La0.02NbO3 on the relaxation and storage properties of this ceramic was …


Relaxor/antiferroelectric composites: a solution to achieve high …

Recently developed Na1/2Bi1/2TiO3 (NBT)-based relaxor ferroelectric ceramics are promising lead-free candidates for dielectric energy storage applications because of their …


Tailoring high-energy storage NaNbO 3 -based materials from …

We show that the energy-storage density of the antiferroelectric compositions can be increased by an order of magnitude, while increasing the chemical disorder transforms the material to a...


Superior energy-storage performances achieved in NaNbO3-based antiferroelectric ceramics by phase-structure and relaxation …

Superior energy‐storage performance of a giant energy‐storage density Wrec ≈8.12 J cm−3, a high efficiency η ≈90%, and an excellent thermal stability (±10%, −50 to 250 C) and an ...


NaNbO3-based antiferroelectric multilayer ceramic capacitors for energy storage …

In our case n is 4, as our MLCC samples have 5 ceramic layers.Δ T is the difference between 900 C, which was used as high-temperature relaxed state, and 25 C used as room temperature. Therefore, using Eqs. (3) and (4) and values from Table 1, the tensile stress in the ceramic layers is calculated to be 25 MPa, while the compressive …


Study of the long time relaxation of the weak ferroelectricity in PbZrO3 antiferroelectric …

1. Introduction Antiferroelectric materials present an important interest for energy storage applications [1], [2], [3] due to the double hysteresis in the polarization versus electric field loop. When a high electric field is applied to an antiferroelectric material, a large ...


Lead-free BiFeO3-BaTiO3 based high-Tc ferroelectric ceramics: Antiferroelectric chemical modification leading to high energy storage …

In summary, a strategy of introducing an antiferroelectric phase into the BiFeO 3-BaTiO 3 matrix was employed to attain an ultrahigh energy storage capacity. By incorporating ANT into BF-BT, it is possible to fabricate ceramics with a high P max, increased E b, and a small P r, which contribute to a remarkable improvement in the …


Energy storage and dielectric properties of PLZST-based antiferroelectric …

The mild BiNbO 4 doping first destroyed the relaxation behavior of PLZST. Then with the increase in BiNbO 4, the local defect dipole forms another weak coupling and reduce the antiferroelectric-ferroelectric phase transition field (E AFE-FE). When x …


Comprehensive energy-storage performance enhancement in …

Lead-free dielectric capacitors with excellent energy-storage performance have gained much attention for their remarkable potential applications in pulsed power electronic systems and devices. However, the large recoverable energy-storage density W rec is usually accompanied with low efficiency η, hindering their practical …


Superior energy-storage performances achieved in NaNbO3 …

These results not only demonstrate the great potential of NaNbO 3-based relaxor AFE ceramics for dielectric energy-storage applications, but also confirm the …


Relaxor antiferroelectric ceramics with ultrahigh efficiency for energy storage …

Enhancing the efficiency in energy storage capacitors minimizes energy dissipation and improves device durability. A new efficiency-enhancement strategy for antiferroelectric ceramics, imposing relaxor characteristics through forming solid solutions with relaxor compounds, is demonstrated in the present work.


Materials | Free Full-Text | High Energy Storage …

(Pb0.97La0.02)(Zr0.95Ti0.05)O3 (PLZT2/95/5) ceramics were successfully prepared via a solid-state reaction route. The dielectric properties were investigated in the temperature region of 26–650 °C. The dielectric …


Realizing Stable Relaxor Antiferroelectric and Superior Energy Storage …

In this work, a novel (Na 1-x/2 La x/2)(Nb 1-x Ti x)O 3 lead-free bulk ceramic exhibits excellent energy storage properties of a giant recoverable energy storage density W rec ≈ 6.5 J/cm 3, a relatively high efficiency η ≈ 66%, and an ultrafast discharge speed t …


Novel lead-free NaNbO3-based relaxor antiferroelectric ceramics with ultrahigh energy storage …

Superior energy‐storage performance of a giant energy‐storage density Wrec ≈8.12 J cm−3, a high efficiency η ≈90%, and an excellent thermal stability (±10%, −50 to 250 C) and an ...


Superior energy storage properties in lead-free NaNbO3-based …

NaNbO3 (NN)-based lead-free antiferroelectric (AFE) ceramics have promising characteristics for utilization in high power electronic devices. In this work, relaxor AFE …


(PDF) High Energy Storage Density and Impedance Response of PLZT2/95/5 Antiferroelectric …

Two phase transition points were detected during heating, which were found to coexist from 150 to 200 C. Electric field induced ferroelectric to antiferroelectric phase transition behavior of the ...


Improved energy storage performance of …

Journal of the American Ceramic Society (JACerS) is a leading ceramics journal publishing research across the field of ceramic and glass science and engineering. NaNbO 3-based antiferroelectric …


High energy density in artificial heterostructures through relaxation …

This precise control over relaxation time holds promise for a wide array of applications and has the potential to accelerate the development of highly efficient energy storage systems. Managing high energy density has become increasingly important in applications ranging from electric power systems to portable electronic devices ( 1 – 3 ).


Designing lead-free antiferroelectrics for energy storage

Antiferroelectric capacitors hold great promise for high-power energy storage. Here, through a first-principles-based computational approach, authors find high theoretical energy densities in rare ...


Enhanced comprehensive energy storage properties in NaNbO3 …

The 1.5 mol% MnO 2 doped sample exhibits excellent comprehensive energy storage performance with an ultrahigh recoverable energy storage density of …