Significantly enhanced energy storage performance of lead-free BiFeO 3-based ceramics via synergic optimization strategy
6 天之前· This yielded in a significant recoverable energy density (Wrec) of 5.89 J cm-3 and an efficiency ( ) of 87.4% at 370 kV cm-1 for 0.15CTA ceramic. In addition, the 0.15CTA ceramic exhibits excellent ESP stability (30 ~ 200°C and 1-200 Hz), and also achieves ultra-high power density (154 MW cm-3) and fast discharge time (54.07 ns). This work
Lead-free ferroelectric ceramics have garnered tremendous attention and are expected to replace lead-based ceramics in the near future. However, the energy density of lead-free ceramics is still lagging behind that of lead-containing counterparts, severely limiting their applications. Significant efforts have been made to enhance the energy storage performance
However, a lack of stable, inexpensive and energy-dense thermal energy storage materials impedes the advancement of this technology. Here we report the first, to our knowledge, ''trimodal
NaNbO 3-based lead-free ceramics have attracted much attention in high-power pulse electronic systems owing to their non-toxicity, low cost, and superior energy storage properties. However, due to the high remnant polarization and limited breakdown electric field, recoverable energy density as well as energy efficiency of NaNbO 3
As a benefit from the above synergistic effects, a high W rec of 7.24 J/cm 3, η of 72.55%, power density of 173.73 MW/cm 3, and quick discharge rate of 18.4 ns, surpassing those of many lead-free ceramics, are obtained in the (Ag 0.91 Sm 0.03)(Nb 0.85 Ta 0.15)O 3 ceramic. Finite element simulations for the breakdown path and transmission electron microscopy
Our research result not only indicates the great possibility of Na 0.5 Bi 0.5 TiO 3-based lead-free compositions to replace lead-based energy-storage ceramics but also gives an effective strategy to design ultrahigh
4 天之前· K0.5Na0.5NbO3 (KNN)-based energy-storage ceramics have been widely concerned because of their excellent energy-storage performance. In this work, Ta2O5 (4 eV) and ZnO (3.37 eV) with wide band gap were added to KNN ceramics to improve the insulation and the breakdown field strength Eb. Linear dielectric SrTiO3 was selected to reduce the hysteresis of
The crossover ferroelectrics of 0.9BST–0.1BMN ceramic possesses a high energy storage efficiency (η) of 85.71%, a high energy storage density (W) of 3.90 J/cm 3, and an ultrahigh recoverable energy storage
In the past decade, efforts have been made to optimize these parameters to improve the energy-storage performances of MLCCs. Typically, to suppress the polarization hysteresis loss, constructing relaxor ferroelectrics (RFEs) with nanodomain structures is an effective tactic in ferroelectric-based dielectrics [e.g., BiFeO 3 (7, 8), (Bi 0.5 Na 0.5)TiO 3 (9,
4 天之前· K0.5Na0.5NbO3 (KNN)-based energy-storage ceramics have been widely concerned because of their excellent energy-storage performance. In this work, Ta2O5 (4 eV) and ZnO (3.37 eV) with wide band gap were added to
BaTiO 3 ceramics are difficult to withstand high electric fields, so the energy storage density is relatively low, inhabiting their applications for miniaturized and lightweight power electronic devices. To address this issue, we added Sr 0.7 Bi 0.2 TiO 3 (SBT) into BaTiO 3 (BT) to destroy the long-range ferroelectric domains. Ca 2+ was introduced into BT-SBT in the
However, a lack of stable, inexpensive and energy-dense thermal energy storage materials impedes the advancement of this technology. Here we report the first, to our knowledge, ''trimodal
To achieve the miniaturization and integration of advanced pulsed power capacitors, it is highly desirable to develop lead-free ceramic materials with high recoverable energy density (Wrec) and high energy storage efficiency (η). Whereas, Wrec (<2 J/cm3) and η (<80%) have be seriously restricted because of low electric breakdown strength (BDS < 200
This paper first briefly introduces the basic physical principles and energy storage performance evaluation parameters of dielectric energy storage materials, then summarizes the critical research systems and related progress of BNT-based lead-free energy storage materials (bulk ceramics, films and multilayer ceramics) from the
2 天之前· Anti-ferroelectric ceramics, such as PbZrO 3 and Pb(Hf,Sn)O 3, exhibit double P-E loops, making them suitable for high energy storage applications due to their low remnant polarization, high maximum polarization and moderate breakdown strength[11], [12], [13]. However, the majority of anti-ferroelectric ceramics are lead-based, and the toxic nature of
Recently, a series of superior processes to obtain high E b have been investigated for the energy storage properties. (Ⅰ) Element doping can greatly add the bandgap of the AFE ceramics, which is availed for improving high E b. Xu et al. found that the wide band gap of calcium hafnate (∼6.4 eV) is useful for the broadening average E g of the AN-based
The crossover ferroelectrics of 0.9BST–0.1BMN ceramic possesses a high energy storage efficiency (η) of 85.71%, a high energy storage density (W) of 3.90 J/cm 3, and an ultrahigh recoverable energy storage density (W rec) of 3.34 J/cm 3 under a dielectric breakdown strength of 400 kV/cm and is superior to other lead-free BaTiO 3
Herein, we report lead lutetium niobate (PLN) based ceramics which is an alternative AFE material due to its significantly enhanced energy storage density (6.43 J/cm3) compared to popular Pb(Zr,Ti
Our research result not only indicates the great possibility of Na 0.5 Bi 0.5 TiO 3-based lead-free compositions to replace lead-based energy-storage ceramics but also gives an effective strategy to design ultrahigh energy-storage performances for eco-friendly ceramics.
Materials offering high energy density are currently desired to meet the increasing demand for energy storage applications, such as pulsed power devices, electric vehicles, high-frequency inverters, and so on. Particularly, ceramic-based dielectric materials have received significant attention for energy storage capacitor applications due to their
Most current research on energy storage capacitors is concentrated on dielectric materials with perovskite structures, like NaNbO 3, Bi 0.5 Na 0.5 TiO 3, BiFeO 3 or lead-based (such as (Pb,La)(Zr
Here, we present an overview on the current state-of-the-art lead-free bulk ceramics for electrical energy storage applications, including SrTiO 3, CaTiO 3, BaTiO 3, (Bi 0.5 Na 0.5)TiO 3, (K 0.5 Na 0.5)NbO 3, BiFeO 3, AgNbO 3 and NaNbO 3-based ceramics. This review starts with a brief introduction of the research background, the development
Energy storage performance of Na 0.5 Bi 0.5 TiO 3 based lead-free ferroelectric ceramics prepared via non-uniform phase structure modification and rolling process Chem. Eng. J., 420 ( 2021 ), Article 130475
As a benefit from the above synergistic effects, a high W rec of 7.24 J/cm 3, η of 72.55%, power density of 173.73 MW/cm 3, and quick discharge rate of 18.4 ns, surpassing
6 天之前· This yielded in a significant recoverable energy density (Wrec) of 5.89 J cm-3 and an efficiency ( ) of 87.4% at 370 kV cm-1 for 0.15CTA ceramic. In addition, the 0.15CTA ceramic
2 天之前· Anti-ferroelectric ceramics, such as PbZrO 3 and Pb(Hf,Sn)O 3, exhibit double P-E loops, making them suitable for high energy storage applications due to their low remnant
NaNbO 3-based lead-free ceramics have attracted much attention in high-power pulse electronic systems owing to their non-toxicity, low cost, and superior energy
BNT-based ceramics have become one of the most potential and competitive environment-friendly ferroelectric materials for energy storage, which are expected to become the substitute for lead-based energy storage materials [, , ].
The energy storage research of BNT-based ceramics is summarized from three aspects: bulk, thin film and multilayer. The energy storage optimization of BNT-based ceramics is reviewed from ion doping and multi-component modification aspects. The future research and development of BNT-based energy storage ceramics are prospected.
Cite this: ACS Appl. Mater. Interfaces 2020, 12, 27, 30289–30296 Although extensive studies have been done on lead-free dielectric ceramics to achieve excellent dielectric behaviors and good energy storage performance, the major problem of low energy density has not been solved so far.
A Wrec (2.49 J/cm 3) with medium high η (85%) is obtained in NaNbO 3 modified BNT-ST ceramics , while a Wrec (2.25 J/cm 3) with moderate η (75.88%) in AgNbO 3 modified one . Meanwhile, BiAlO 3, BaSnO 3, and Bi 0.5 Li 0.5 TiO 3 -doped BNT-ST ceramics are also investigated for energy storage applications [, , ].
A lot of research work has been reported on the modification of BNT-NN ceramics to regulate energy storage properties. By substituting Li + for Na + in the A-site of BNT-NN ceramics, a high Wrec (4.83 J/cm 3) with moderate η (78.9%) is obtained at 350 kV/cm . Xu et al. and Chen et al. both prepared BNT-NN-BaTiO 3 ceramics [258, 259].
Our research result not only indicates the great possibility of Na 0.5 Bi 0.5 TiO 3 -based lead-free compositions to replace lead-based energy-storage ceramics but also gives an effective strategy to design ultrahigh energy-storage performances for eco-friendly ceramics. To access this article, please review the available access options below.
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