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 …
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 …
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)],
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.
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 …
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 – …
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 …
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 …
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 …
Recently developed Na1/2Bi1/2TiO3 (NBT)-based relaxor ferroelectric ceramics are promising lead-free candidates for dielectric energy storage applications because of their …
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 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 ...
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 …
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 ...
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 …
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 …
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 …
These results not only demonstrate the great potential of NaNbO 3-based relaxor AFE ceramics for dielectric energy-storage applications, but also confirm the …
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.
(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 …
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 …
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 (NN)-based lead-free antiferroelectric (AFE) ceramics have promising characteristics for utilization in high power electronic devices. In this work, relaxor AFE …
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 ...
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 …
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 ).
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 ...
The 1.5 mol% MnO 2 doped sample exhibits excellent comprehensive energy storage performance with an ultrahigh recoverable energy storage density of …