This chapter reviews the recent progress in first‐principles calculations and first‐principles‐derived simulations on ferroelectrics for energy applications ‐ energy conversion and energy storage. It
Customer ServiceAccording to the ferroelectric and piezoelectric investigations, BCT 0.10 exhibits maximum spontaneous polarisation with the highest piezoelectric charge coefficient of 100 pC/N. BCT 0.10 has a...
Customer ServiceIn this paper, combining P-E loops, I-E curves and Raman spectral fitting we analyse energy storage performance of ferroelectric materials and propose an equivalent
Customer ServiceSchematic calculation of the measurement and energy storage properties of ferroelectric ceramics (a); The unipolar P–E hysteresis Ba0.4Sr0.6Ti0.996Mn0.004O3–x wt% MgO (2 ≤ x ≤ 6) ceramics
Customer ServiceIn this work, four methods were applied to calculate the energy storage in linear, ferroelectric, and antiferroelectric capacitors. All methods were valid when the linear capacitor was examined. In terms of the ferroelectric capacitor, the method of equivalent parameter using DC-bias capacitance was infeasible under the high voltage owing to a
Customer ServiceOptimizing the energy storage properties of ferroelectric ceramics during heat treatment is a crucial issue. In this work, a phase field modeling for dielectric breakdown coupled with a grain growth model is developed to give a fundamental understanding of the effect of grain growth on dielectric breakdown. In addition, this work proposes a
Customer ServiceThese models have subsequently been used to study phase transition [[48], [49]], negative capacitance [50], polar skyrmions [51], and energy storage [52, 53]. The above works prove the effectiveness of the second-principles method and make us wonder whether the second-principles method is suitable for studying the heat transfer properties in ferroelectric
Customer ServiceAccording to the ferroelectric and piezoelectric investigations, BCT 0.10 exhibits maximum spontaneous polarisation with the highest piezoelectric charge coefficient of 100 pC/N. BCT 0.10 has a...
Customer ServiceIn the present work, the synergistic combination of mechanical bending and defect dipole engineering is demonstrated to significantly enhance the energy storage performance of freestanding ferroelectric thin films, achieved through the generation of a narrower and right-shifted polarization-electric field hysteresis loop.
Customer ServiceThe rapid development of clean energy provides effective solutions for some major global problems such as resource shortage and environmental pollution, and full utilization of clean energy necessitates overcoming the randomness and intermittence by the integration of advanced energy storage technologies. 1–4 For this end, dielectric energy-storage capacitors
Customer Service摘要: 采用磁控溅射法和脉冲激光沉积法,以钛酸锶 (001)SrTiO3(STO)单晶基片为衬底,制备了La0.5Sr0.5CoO3/ Na0.5Bi0.5TiO3/La0.5Sr0.5CoO3(LSCO/NBT/LSCO)铁电电介质电容器,X
Customer ServiceSpecifically, using high-throughput second-principles calculations, we engineer PbTiO 3 /SrTiO 3 superlattices to optimize their energy storage performance at room temperature (to maximize density and release
Customer ServiceIn this work, four methods were applied to calculate the energy storage in linear, ferroelectric, and antiferroelectric capacitors. All methods were valid when the linear capacitor was examined. In
Customer ServiceSpecifically, using high-throughput second-principles calculations, we engineer PbTiO 3 /SrTiO 3 superlattices to optimize their energy storage performance at room temperature (to maximize density and release efficiency) with respect to different design variables (layer thicknesses, epitaxial conditions, and stiffness of the dielectric layer
Customer ServiceIn this paper, combining P-E loops, I-E curves and Raman spectral fitting we analyse energy storage performance of ferroelectric materials and propose an equivalent circuit model (I (t) = V (t) / R + K C + I p (t)).
Customer Service摘要: 采用磁控溅射法和脉冲激光沉积法,以钛酸锶 (001)SrTiO3(STO)单晶基片为衬底,制备了La0.5Sr0.5CoO3/ Na0.5Bi0.5TiO3/La0.5Sr0.5CoO3(LSCO/NBT/LSCO)铁电电介质电容器,X射线衍射证实了 [001]NBT// [001]LSCO// [001]STO外延关系。 外延NBT薄膜电容器的有效储能密度Wrec随外加电场的增加呈线性增大规律,在1250 kV/cm时,Wrec达到了25.7 J/cm3,转化效
Customer ServiceFig. 1. Energy storage in -P loops. The energy density required to charge the system (W in) is equal to the recovered energy density upon discharge (out) plus W the loss (L). Energy densities are proportional to areas in P- diagrams.
Customer ServiceEspecially, 0.9BNT–0.1BZT:0.6%Er 3+ ceramic exhibits an ultra-high maximum polarization (P max = 66.3 µC/cm 2), large recoverable energy storage density (W rec = 2.95 J/cm 3), total energy storage density (W = 5.75 J/cm 3), and energy storage efficiency (η = 51.3%) under 190 kV/cm. The sample also exhibits excellent thermal stability (30-150°C) and
Customer ServiceIn the present work, the synergistic combination of mechanical bending and defect dipole engineering is demonstrated to significantly enhance the energy storage performance of freestanding ferroelectric thin films,
Customer ServiceIn this paper, the modeling consists mainly of dielectric breakdown, grain growth, and breakdown detection. Ziming Cai explored the effect of grain size on the energy storage density by constructing phase-field modeling for a dielectric breakdown model with different grain sizes [41] pared with CAI, this work focuses on the evolution of grain
Customer ServiceSpecifically, using high-throughput second-principles calculations, we engineer PbTiO3/SrTiO3 superlattices to optimize their energy storage performance at room temperature (to maximize density
Customer ServiceThis chapter reviews the recent progress in first‐principles calculations and first‐principles‐derived simulations on ferroelectrics for energy applications ‐ energy conversion and energy storage. It illustrates the basic idea of first‐principles calculations and effective Hamiltonian method.
Customer ServiceIn this paper, by targeting the prototypical BaTiO 3-BiScO 3 (BT-BS) weakly coupled energy-storage ceramics, we investigated the ferroelectric properties at the electronic and atomic scale using first-principles calculations coupled with a phenomenological theory model. Results show that the lattice volumes expand with the increase of BS content, and an indirect
Customer ServiceIn this paper, the ferroelectric and energy storage properties of multilayers based on the relaxorlike materials BZT and BST have been investigated. The main finding is that there is strong evidence that the outer layers of a multilayer and more specifically their thickness, determine the breakdown field of a device and in this way determine to
Customer ServiceIn this paper, the ferroelectric and energy storage properties of multilayers based on the relaxorlike materials BZT and BST have been investigated. The main finding is that there is strong evidence that the outer
Customer ServiceThe energy storage properties of (1− x)BNT− x BZT:0.6%Er 3+ are systematically investigated under low electric fields by modulating the coupling between coexisting phase structures of polar nano regions.
Customer ServiceElectrochemical batteries, thermal batteries, and electrochemical capacitors are widely used for powering autonomous electrical systems [1, 2], however, these energy storage devices do not meet output voltage and current requirements for some applications.Ferroelectric materials are a type of nonlinear dielectrics [[3], [4], [5]].Unlike batteries and electrochemical
Customer ServiceThe energy storage properties of (1− x)BNT− x BZT:0.6%Er 3+ are systematically investigated under low electric fields by modulating the coupling between coexisting phase structures of polar nano regions.
Customer ServiceOur experiments and ab initio calculations demonstrate that a defect dipole (μdef) composed of Cu3+ and oxygen vacancy in a ferroelectric BaTiO3 ceramic is coupled with spontaneous polarization
Customer ServiceTaking PZT, which exhibits the most significant improvement among the four ferroelectric materials, as an example, the recoverable energy storage density has a remarkable enhancement with the gradual increase in defect dipole density and the strengthening of in-plane bending strain.
Through the integration of mechanical bending design and defect dipole engineering, the recoverable energy storage density of freestanding PbZr 0.52 Ti 0.48 O 3 (PZT) ferroelectric films has been significantly enhanced to 349.6 J cm −3 compared to 99.7 J cm −3 in the strain (defect) -free state, achieving an increase of ≈251%.
The main finding is that there is strong evidence that the outer layers of a multilayer and more specifically their thickness, determine the breakdown field of a device and in this way determine to a large extend the energy storage properties of a multilayer device. These conclusions confirm earlier suggestions in a study on the PZT/PLZT system.
Using ferroelectric energy storage capacitors under unipolar charging would therefore potentially allow for a higher breakdown field and consequently a higher energy storage density, by choosing the proper charging polarity configuration.
Moreover, the energy storage properties of flexible ferroelectric thin films can be further fine-tuned by adjusting bending angles and defect dipole concentrations, offering a versatile platform for control and performance optimization.
The stored energy density at each value of the field is computed by trapezoid integration of the P -ε over the P axis.
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