An Intragranular Segregation Structure Enables an Excellent Energy Storage Performance in Composite Dielectrics through Delayed Saturation Polarization

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(42), С. 57386 - 57394

Опубликована: Окт. 10, 2024

An electrostatic capacitor for energy storage is an important basic component of pulse power electronics. The electrical breakdown strength (Eb) normal ferroelectrics low, which limits their application in dielectric storage. Constructing a 0–3-type composite dielectric, that is, introducing insulating metallic oxide into the ferroelectric matrix, can greatly enhance Eb. Unfortunately, intergranular secondary phase typically forms causes large attenuation constant, leads to limited improvement performance. In this work, ceramic with intragranular segregation structure was intentionally designed using BaTiO3–BaZrO3–CaTiO3 (BCZT) system as example. Compared those BCZT solid solution without and grain-boundary phase, rationally delivered recoverable density 5.86 J/cm3 high efficiency 86.7% at moderate electric field 550 kV/cm. Such performance achieved because displayed delayed saturation polarization This microstructural engineering strategy generally applicable optimize dielectrics meet demands high-performance capacitors.

Язык: Английский

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High-performance electric energy storage in BiFeO3–Ba(Ti0.8Zr0.2)O3 relaxor ferroelectric ceramics

Ceramics International, Год журнала: 2024, Номер unknown

Опубликована: Окт. 1, 2024

Язык: Английский

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BiFeO3-Based Lead-Free Materials: Recent Breakthroughs and their Multifunctional Applications

Journal of Alloys and Compounds, Год журнала: 2024, Номер unknown, С. 177170 - 177170

Опубликована: Окт. 1, 2024

Язык: Английский

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Energy-Storage Performance of K0.5Na0.5NbO3-Based Ceramics Modified by Bi(Mg2/3(Nb0.85Ta0.15)1/3)O3

Ceramics International, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Язык: Английский

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Effect of Na²⁺ and Bi³⁺ substitution in lead-free BZT-Pr multifunctional ceramics for energy storage and thermal energy conversion

RSC Advances, Год журнала: 2025, Номер 15(12), С. 9576 - 9586

Опубликована: Янв. 1, 2025

For this study, Ba1-y-x Pr2y/3□ y/3(Na0.5Bi0.5) x Ti0.9Zr0.1O3 (y = 0.5%; 0.05, 0.1 and 0.15) (abbreviated as BZT-Pr-xNBT) ceramics were prepared by a solid state reaction method. The samples structurally characterized X-ray diffraction (XRD) the software Fullprof, which showed atomic positions, bond distances, angles of these materials in tetragonal structure. crystallite size, determined both Williamson-Hall Debye-Scherrer methods, increases with increasing Na0.5Bi0.5TiO3 NBT) content Ba1-y y/3Ti0.9Zr0.1O3 0.5%) BZT-Pr) ceramic. ultraviolet-visible (UV-Vis) diffuse reflectance spectrum indicated that BZT-Pr-xNBT exhibited direct band gap values range 2.90-2.78 eV. Moreover, study investigates ferroelectric, energy storage, pyroelectric harvesting properties varying NBT contents (x 0.10 0.15). results reveal substitution significantly influences ferroelectric characteristics enhances recoverable storage density (W rec) efficiency (η). Temperature-dependent scaling relations for coercive field (E C) remnant polarization (P r) derived all samples. BZT-Pr-0.15NBT ceramic, relation E C P r ∝ T -0.089, -0.233) highlights improved thermal stability composition. Pyroelectric under Olsen cycle identified BZT-Pr-0.05NBT most efficient These findings emphasize crucial impact optimizing ceramics.

Язык: Английский

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Exploring energy storage characteristics of lead-free [(Na1 − 3x/2Bi3x/2) (Nb1 − xSrx) O3] ceramics

Journal of Electroceramics, Год журнала: 2025, Номер unknown

Опубликована: Апрель 29, 2025

Язык: Английский

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Dielectric and energy storage features of BiFeO3-SrTiO3 ceramics and their thermodynamic analysis

Ceramics International, Год журнала: 2025, Номер unknown

Опубликована: Май 1, 2025

Язык: Английский

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Structural, microstructural and optical characteristics of lead-free (1−x)(BiFeO3)–x(CaTiO3) ceramics in submillimeter region

Journal of Materials Science Materials in Electronics, Год журнала: 2024, Номер 35(7)

Опубликована: Фев. 29, 2024

Язык: Английский

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Study of Dielectric Relaxation Dynamics and Transport Properties of Nd³⁺-Substituted Bismuth Ferrite Ceramics for Energy Storage Applications

ACS Applied Energy Materials, Год журнала: 2024, Номер 7(15), С. 6032 - 6044

Опубликована: Июль 31, 2024

This research article focuses on analyzing the behavior of high-temperature dielectric relaxation and electric conduction mechanisms in Bi1–xNdxFeO3 (BNFO) samples, where value x varies as 0, 0.10, 0.15, 0.2. The study's findings indicate that all these samples exhibit two distinct transitions. first transition occurs at a lower temperature (Ts), typically range 425 to 450 K, is characterized by frequency-dependent shoulder. associated with presence polar nanoregions (PNRs). second takes place within approximately 580 650 marking from ferroelectric paraelectric state Curie (TC). Furthermore, impedance analysis specimens reveals negative coefficient resistance, indicating wide does not conform Debye-type model. Additionally, study conductivity provides valuable insights into transport phenomena observed samples. obtained energy storage properties bulk ceramics are quite significant compared similar systems reported literature.

Язык: Английский

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Influence of CaTiO3 on structural, microstructural, electrical and dielectric properties of microwave sintered BiFeO3-based lead-free ceramics

Journal of Materials Science Materials in Electronics, Год журнала: 2024, Номер 35(34)

Опубликована: Ноя. 29, 2024

Язык: Английский

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