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Flexible ferroelectric films with high polarization hold great promise for energy storage and electrocaloric (EC) refrigeration. Herein, we fabricate a lead-free Mn-modified 0.75 Bi (Mg 0.5 Ti 0.5 )O 3 –0.25 BaTiO 3 (BMT–BTO) thin film based on a flexible mica substrate.
Meanwhile, a good energy storage density of ∼70.6 J cm –3 and a quite high efficiency of ∼82% are realized in the same ferroelectric film, accompanied by excellent stability of frequency and electric fatigue (500–10 kHz and 10 8 cycles). Furthermore, there is no apparent variation in performance under different bending strains.
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%.
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.
Taking 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.
A classic approach to promote energy storage performance involves combining ferroelectrics with materials of a different structure to reduce Pr and increase Eb.
Ferroelectric oxide thin-film capacitors find applications in microelectronic systems, mobile platforms, and miniaturized power devices. They can withstand higher electric …
The unique properties of ferroelectric materials, including spontaneous polarization, high dielectric constant, and piezoelectric effect, have become an indispensable …
Ferroelectric thin films capacitors have been potentially applied in advanced electronics and electric power systems because of their high power densities and fast charge–discharge …
In the present study, we show a significant enhancement of energy storage …
Flexible ferroelectric films with high polarization hold great promise for energy storage and electrocaloric (EC) refrigeration. Herein, we fabricate a lead-free Mn-modified …
This study demonstrates an ultra-thin multilayer approach to enhance the …
This study demonstrates an ultra-thin multilayer approach to enhance the energy storage performance of ferroelectric-based materials. The ultra-thin structure in BiFeO 3 …
In the present study, we show a significant enhancement of energy storage density and efficiency at both low and moderate electric fields in 500nm thick epitaxial relaxor …
The energy storage capacity was best demonstrated by the RFE (BNKT/BNKT …
Substrate-induced strain degrades as the film thickness increases, and the film relaxes by the formation of dislocations or other defects. Hence, for BTO thin films grown on …
Microstructures and physical properties such as the polarization behaviors, leakage current, dielectric features, and energy-storage characteristics of the three films were …
The recoverable energy storage density of freestanding PbZr0.52Ti0.48O3 thin films increases from 99.7 J cm⁻³ in the strain (defect) ‐free state to 349.6 J cm⁻³, marking a …
The development of new materials often presents opportunities for the advancement of device technology. Böscke et al. [7] reported ferroelectricity in Si-doped HfO 2 …
In this work, the 0.68BiFeO 3-0.32BaTiO 3 (BFBT) ferroelectric thin film was fabricated with high maximum polarization for energy storage applications. BFBT thin film with pure perovskite phase was deposited on …
Flexible ferroelectric films with high polarization hold great promise for energy storage and electrocaloric (EC) refrigeration. Herein, we fabricate a lead-free Mn-modified 0.75 Bi(Mg 0.5 Ti 0.5 )O 3 –0.25 BaTiO 3 …
The recoverable energy storage density of freestanding PbZr0.52Ti0.48O3 …
Flexible devices with unique flexible and transparent features have received huge attractions and extensive researches in recent years, which can be attributed to its great …
Here, we designed and prepared eco-friendly (1-x)Bi0.45Na0.45Ba0.1TiO3 …
In the present work, the synergistic combination of mechanical bending and defect dipole engineering is demonstrated to significantly enhance the energy storage …
The substantial improvement in the recoverable energy storage density of freestanding PZT thin films, experiencing a 251% increase compared to the strain (defect)-free …
Here, we designed and prepared eco-friendly (1-x)Bi0.45Na0.45Ba0.1TiO3-xBi(Mg1/3Nb2/3)O3 multifunctional ferroelectric thin films for energy storage and photovoltaic. …
Figure 4b compares the energy storage performance of our films with those of state-of-the-art dielectrics, for example, the lead-based Pb(Mg 1/3 Nb 2/3)O 3 –PbTiO 3 film …
Ferroelectricity discovered in the doped-HfO 2 thin film has garnered significant attention as a technology enabler for emerging ferroelectric (FE) memory 43,44,45,46.
The energy storage capacity was best demonstrated by the RFE (BNKT/BNKT-STO) 6 multi-layered flexible thin film with an excellent energy storage capacity (ESD ∼ 73.7 …
By introducing super tetragonal nanostructures into glassy ferroelectric with MPB composition, a giant energy storage density of ≈86 J cm −3 with a high energy efficiency …
Herein, we propose a flexible ferroelectric random access memory (FeRAM) based on a ceramic/polymer bilayer consisting of a solution-processed ferroelectric …